56563531 has 8 divisors (see below), whose sum is σ = 57610400. Its totient is φ = 55520640.

The previous prime is 56563519. The next prime is 56563541. The reversal of 56563531 is 13536565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56563531 - 2¹³ = 56555339 is a prime.

It is a super-2 number, since 2×56563531² = 6398866078375922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56563511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55555 + ... + 56563.

It is an arithmetic number, because the mean of its divisors is an integer number (7201300).

Almost surely, 2^56563531 is an apocalyptic number.

56563531 is a deficient number, since it is larger than the sum of its proper divisors (1046869).

56563531 is a wasteful number, since it uses less digits than its factorization.

56563531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989.

The product of its digits is 40500, while the sum is 34.

The square root of 56563531 is about 7520.8730211326. The cubic root of 56563531 is about 383.8652843234.

The spelling of 56563531 in words is "fifty-six million, five hundred sixty-three thousand, five hundred thirty-one".