56645757 has 64 divisors (see below), whose sum is σ = 101928960. Its totient is φ = 30393792.

The previous prime is 56645731. The next prime is 56645761. The reversal of 56645757 is 75754665.

56645757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56645757 - 2¹⁰ = 56644733 is a prime.

It is a super-2 number, since 2×56645757² = 6417483572206098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56645767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 360723 + ... + 360879.

It is an arithmetic number, because the mean of its divisors is an integer number (1592640).

Almost surely, 2^56645757 is an apocalyptic number.

It is an amenable number.

56645757 is a deficient number, since it is larger than the sum of its proper divisors (45283203).

56645757 is a wasteful number, since it uses less digits than its factorization.

56645757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 273 counting only the distinct ones).

The product of its digits is 882000, while the sum is 45.

The square root of 56645757 is about 7526.3375555445. The cubic root of 56645757 is about 384.0512016687.

The spelling of 56645757 in words is "fifty-six million, six hundred forty-five thousand, seven hundred fifty-seven".