56133661 has 8 divisors (see below), whose sum is σ = 56946240. Its totient is φ = 55326432.

The previous prime is 56133587. The next prime is 56133667. The reversal of 56133661 is 16633165.

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 56133661 - 2¹¹ = 56131613 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 (56133667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22830 + ... + 25168.

It is an arithmetic number, because the mean of its divisors is an integer number (7118280).

Almost surely, 2^56133661 is an apocalyptic number.

It is an amenable number.

56133661 is a deficient number, since it is larger than the sum of its proper divisors (812579).

56133661 is a wasteful number, since it uses less digits than its factorization.

56133661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its digits is 9720, while the sum is 31.

The square root of 56133661 is about 7492.2400522140. The cubic root of 56133661 is about 382.8903807704.

The spelling of 56133661 in words is "fifty-six million, one hundred thirty-three thousand, six hundred sixty-one".