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80535141 = 348091229
BaseRepresentation
bin1001100110011…
…01111001100101
312121112121110000
410303031321211
5131104111031
611554051513
71665352221
oct463157145
9177477400
1080535141
1141507275
1222b79b99
13138b9b3b
14a9a5781
15710c3e6
hex4ccde65

80535141 has 20 divisors (see below), whose sum is σ = 120552300. Its totient is φ = 53580096.

The previous prime is 80535131. The next prime is 80535151. The reversal of 80535141 is 14153508.

It is an interprime number because it is at equal distance from previous prime (80535131) and next prime (80535151).

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 4322241 = 8730^2 + 2079^2 .

It is not a de Polignac number, because 80535141 - 213 = 80526949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80535131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64915 + ... + 66143.

It is an arithmetic number, because the mean of its divisors is an integer number (6027615).

Almost surely, 280535141 is an apocalyptic number.

80535141 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

80535141 is a deficient number, since it is larger than the sum of its proper divisors (40017159).

80535141 is a wasteful number, since it uses less digits than its factorization.

80535141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 80535141 is about 8974.1373401570. The cubic root of 80535141 is about 431.8455755925.

Adding to 80535141 its reverse (14153508), we get a palindrome (94688649).

The spelling of 80535141 in words is "eighty million, five hundred thirty-five thousand, one hundred forty-one".

Divisors: 1 3 9 27 81 809 1229 2427 3687 7281 11061 21843 33183 65529 99549 994261 2982783 8948349 26845047 80535141