56552691 has 8 divisors (see below), whose sum is σ = 81203920. Its totient is φ = 34801632.

The previous prime is 56552681. The next prime is 56552701. The reversal of 56552691 is 19625565.

It is an interprime number because it is at equal distance from previous prime (56552681) and next prime (56552701).

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

It is not a de Polignac number, because 56552691 - 2⁷ = 56552563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1450069 = 56552691 / (5 + 6 + 5 + 5 + 2 + 6 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56552651) 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, 724996 + ... + 725073.

It is an arithmetic number, because the mean of its divisors is an integer number (10150490).

Almost surely, 2^56552691 is an apocalyptic number.

56552691 is a deficient number, since it is larger than the sum of its proper divisors (24651229).

56552691 is a wasteful number, since it uses less digits than its factorization.

56552691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450085.

The product of its digits is 81000, while the sum is 39.

The square root of 56552691 is about 7520.1523255849. The cubic root of 56552691 is about 383.8407610694.

The spelling of 56552691 in words is "fifty-six million, five hundred fifty-two thousand, six hundred ninety-one".