56255661 has 32 divisors (see below), whose sum is σ = 103910400. Its totient is φ = 29222640.

The previous prime is 56255627. The next prime is 56255671. The reversal of 56255661 is 16655265.

It is a happy number.

It is not a de Polignac number, because 56255661 - 2⁶ = 56255597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56255611) 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, 11451 + ... + 15608.

It is an arithmetic number, because the mean of its divisors is an integer number (3247200).

Almost surely, 2^56255661 is an apocalyptic number.

It is an amenable number.

56255661 is a deficient number, since it is larger than the sum of its proper divisors (47654739).

56255661 is a wasteful number, since it uses less digits than its factorization.

56255661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27086 (or 27080 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 56255661 is about 7500.3773905051. The cubic root of 56255661 is about 383.1675693292.

The spelling of 56255661 in words is "fifty-six million, two hundred fifty-five thousand, six hundred sixty-one".