56561727 has 32 divisors (see below), whose sum is σ = 83128320. Its totient is φ = 34080480.

The previous prime is 56561723. The next prime is 56561749. The reversal of 56561727 is 72716565.

It is not a de Polignac number, because 56561727 - 2² = 56561723 is a prime.

It is a super-2 number, since 2×56561727² = 6398457922445058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114952 + ... + 115442.

It is an arithmetic number, because the mean of its divisors is an integer number (2597760).

Almost surely, 2^56561727 is an apocalyptic number.

56561727 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

56561727 is a deficient number, since it is larger than the sum of its proper divisors (26566593).

56561727 is a wasteful number, since it uses less digits than its factorization.

56561727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its digits is 88200, while the sum is 39.

The square root of 56561727 is about 7520.7530872912. The cubic root of 56561727 is about 383.8612033645.

The spelling of 56561727 in words is "fifty-six million, five hundred sixty-one thousand, seven hundred twenty-seven".