56153661 has 8 divisors (see below), whose sum is σ = 74906784. Its totient is φ = 37418160.

The previous prime is 56153653. The next prime is 56153701. The reversal of 56153661 is 16635165.

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

It is not a de Polignac number, because 56153661 - 2³ = 56153653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56153561) 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, 8130 + ... + 13356.

It is an arithmetic number, because the mean of its divisors is an integer number (9363348).

Almost surely, 2^56153661 is an apocalyptic number.

It is an amenable number.

56153661 is a deficient number, since it is larger than the sum of its proper divisors (18753123).

56153661 is a wasteful number, since it uses less digits than its factorization.

56153661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8811.

The product of its digits is 16200, while the sum is 33.

The square root of 56153661 is about 7493.5746476565. The cubic root of 56153661 is about 382.9358490224.

The spelling of 56153661 in words is "fifty-six million, one hundred fifty-three thousand, six hundred sixty-one".