56326661 has 16 divisors (see below), whose sum is σ = 61544448. Its totient is φ = 51340800.

The previous prime is 56326649. The next prime is 56326667. The reversal of 56326661 is 16662365.

It is a cyclic number.

It is not a de Polignac number, because 56326661 - 2¹⁰ = 56325637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56326667) 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, 146876 + ... + 147258.

It is an arithmetic number, because the mean of its divisors is an integer number (3846528).

Almost surely, 2^56326661 is an apocalyptic number.

It is an amenable number.

56326661 is a deficient number, since it is larger than the sum of its proper divisors (5217787).

56326661 is a wasteful number, since it uses less digits than its factorization.

56326661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

The product of its digits is 38880, while the sum is 35.

The square root of 56326661 is about 7505.1089932126. The cubic root of 56326661 is about 383.3286995449.

The spelling of 56326661 in words is "fifty-six million, three hundred twenty-six thousand, six hundred sixty-one".