Search a number
-
+
80540901 = 3276719081
BaseRepresentation
bin1001100110011…
…11010011100101
312121112220100100
410303033103211
5131104302101
611554134313
71665405060
oct463172345
9177486310
1080540901
1141510631
1222b81399
13138bc64c
14a9a78d7
15710de86
hex4ccf4e5

80540901 has 24 divisors (see below), whose sum is σ = 134947904. Its totient is φ = 45334080.

The previous prime is 80540899. The next prime is 80540969. The reversal of 80540901 is 10904508.

It is not a de Polignac number, because 80540901 - 21 = 80540899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80540701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5320 + ... + 13761.

Almost surely, 280540901 is an apocalyptic number.

It is an amenable number.

80540901 is a deficient number, since it is larger than the sum of its proper divisors (54407003).

80540901 is a wasteful number, since it uses less digits than its factorization.

80540901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19161 (or 19158 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80540901 is about 8974.4582566303. The cubic root of 80540901 is about 431.8558707720.

It can be divided in two parts, 8054090 and 1, that added together give a triangular number (8054091 = T4013).

The spelling of 80540901 in words is "eighty million, five hundred forty thousand, nine hundred one".

Divisors: 1 3 7 9 21 63 67 201 469 603 1407 4221 19081 57243 133567 171729 400701 1202103 1278427 3835281 8948989 11505843 26846967 80540901