56361566 has 4 divisors (see below), whose sum is σ = 84542352. Its totient is φ = 28180782.

The previous prime is 56361553. The next prime is 56361577. The reversal of 56361566 is 66516365.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×56361566² = 6353252243944712, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14090390 + ... + 14090393.

It is an arithmetic number, because the mean of its divisors is an integer number (21135588).

Almost surely, 2^56361566 is an apocalyptic number.

56361566 is a deficient number, since it is larger than the sum of its proper divisors (28180786).

56361566 is a wasteful number, since it uses less digits than its factorization.

56361566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28180785.

The product of its digits is 97200, while the sum is 38.

The square root of 56361566 is about 7507.4340489944. The cubic root of 56361566 is about 383.4078646930.

The spelling of 56361566 in words is "fifty-six million, three hundred sixty-one thousand, five hundred sixty-six".