56563555 has 8 divisors (see below), whose sum is σ = 70827552. Its totient is φ = 43283328.

The previous prime is 56563553. The next prime is 56563567. The reversal of 56563555 is 55536565.

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 56563555 - 2¹ = 56563553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56563553) 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, 245814 + ... + 246043.

It is an arithmetic number, because the mean of its divisors is an integer number (8853444).

Almost surely, 2^56563555 is an apocalyptic number.

56563555 is a deficient number, since it is larger than the sum of its proper divisors (14263997).

56563555 is a wasteful number, since it uses less digits than its factorization.

56563555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491885.

The product of its digits is 337500, while the sum is 40.

The square root of 56563555 is about 7520.8746166919. The cubic root of 56563555 is about 383.8653386150.

It can be divided in two parts, 565 and 63555, that multiplied together give a triangular number (35908575 = T₈₄₇₄).

The spelling of 56563555 in words is "fifty-six million, five hundred sixty-three thousand, five hundred fifty-five".