56571426 has 64 divisors (see below), whose sum is σ = 129600000. Its totient is φ = 18285696.

The previous prime is 56571419. The next prime is 56571439. The reversal of 56571426 is 62417565.

It is a happy number.

56571426 is a `hidden beast` number, since 565 + 71 + 4 + 26 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379600 + ... + 379748.

It is an arithmetic number, because the mean of its divisors is an integer number (2025000).

Almost surely, 2^56571426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56571426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64800000).

56571426 is an abundant number, since it is smaller than the sum of its proper divisors (73028574).

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

56571426 is a wasteful number, since it uses less digits than its factorization.

56571426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 322 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 56571426 is about 7521.3978753952. The cubic root of 56571426 is about 383.8831431533.

The spelling of 56571426 in words is "fifty-six million, five hundred seventy-one thousand, four hundred twenty-six".