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61712093 = 411505173
BaseRepresentation
bin1110101101101…
…0011011011101
311022010022002002
43223122123131
5111244241333
610042412045
71346354432
oct353323335
9138108062
1061712093
1131920233
1218801025
13ca29341
1482a5b89
1556400e8
hex3ada6dd

61712093 has 4 divisors (see below), whose sum is σ = 63217308. Its totient is φ = 60206880.

The previous prime is 61712071. The next prime is 61712113. The reversal of 61712093 is 39021716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 840889 + 60871204 = 917^2 + 7802^2 .

It is a cyclic number.

It is not a de Polignac number, because 61712093 - 214 = 61695709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61712393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752546 + ... + 752627.

It is an arithmetic number, because the mean of its divisors is an integer number (15804327).

Almost surely, 261712093 is an apocalyptic number.

It is an amenable number.

61712093 is a deficient number, since it is larger than the sum of its proper divisors (1505215).

61712093 is a wasteful number, since it uses less digits than its factorization.

61712093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505214.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 61712093 is about 7855.7044878228. The cubic root of 61712093 is about 395.1755732859.

It can be divided in two parts, 6171 and 2093, that multiplied together give a triangular number (12915903 = T5082).

The spelling of 61712093 in words is "sixty-one million, seven hundred twelve thousand, ninety-three".

Divisors: 1 41 1505173 61712093