56905757 has 4 divisors (see below), whose sum is σ = 57054720. Its totient is φ = 56756796.

The previous prime is 56905753. The next prime is 56905759. The reversal of 56905757 is 75750965.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56905757 - 2² = 56905753 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 (56905753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73907 + ... + 74672.

It is an arithmetic number, because the mean of its divisors is an integer number (14263680).

Almost surely, 2^56905757 is an apocalyptic number.

It is an amenable number.

56905757 is a deficient number, since it is larger than the sum of its proper divisors (148963).

56905757 is a wasteful number, since it uses less digits than its factorization.

56905757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148962.

The product of its (nonzero) digits is 330750, while the sum is 44.

The square root of 56905757 is about 7543.5904581307. The cubic root of 56905757 is about 384.6378941995.

The spelling of 56905757 in words is "fifty-six million, nine hundred five thousand, seven hundred fifty-seven".