56571151 has 16 divisors (see below), whose sum is σ = 73292800. Its totient is φ = 42402528.

The previous prime is 56571149. The next prime is 56571157. The reversal of 56571151 is 15117565.

It is not a de Polignac number, because 56571151 - 2¹ = 56571149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56571157) 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, 14631 + ... + 18088.

It is an arithmetic number, because the mean of its divisors is an integer number (4580800).

Almost surely, 2^56571151 is an apocalyptic number.

56571151 is a deficient number, since it is larger than the sum of its proper divisors (16721649).

56571151 is a wasteful number, since it uses less digits than its factorization.

56571151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32758.

The product of its digits is 5250, while the sum is 31.

The square root of 56571151 is about 7521.3795941968. The cubic root of 56571151 is about 383.8825211194.

The spelling of 56571151 in words is "fifty-six million, five hundred seventy-one thousand, one hundred fifty-one".