56775642 has 32 divisors (see below), whose sum is σ = 141571584. Its totient is φ = 14746800.

The previous prime is 56775637. The next prime is 56775643. The reversal of 56775642 is 24657765.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 56775594 and 56775603.

It is not an unprimeable number, because it can be changed into a prime (56775643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60984 + ... + 61907.

It is an arithmetic number, because the mean of its divisors is an integer number (4424112).

Almost surely, 2^56775642 is an apocalyptic number.

56775642 is an abundant number, since it is smaller than the sum of its proper divisors (84795942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56775642 is a wasteful number, since it uses less digits than its factorization.

56775642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122914.

The product of its digits is 352800, while the sum is 42.

The square root of 56775642 is about 7534.9613137693. The cubic root of 56775642 is about 384.3445123284.

The spelling of 56775642 in words is "fifty-six million, seven hundred seventy-five thousand, six hundred forty-two".