56633161 has 4 divisors (see below), whose sum is σ = 60989572. Its totient is φ = 52276752.

The previous prime is 56633149. The next prime is 56633179. The reversal of 56633161 is 16133665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11943936 + 44689225 = 3456^2 + 6685^2 .

It is a cyclic number.

It is not a de Polignac number, because 56633161 - 2¹³ = 56624969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56633191) 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 3 ways as a sum of consecutive naturals, for example, 2178186 + ... + 2178211.

It is an arithmetic number, because the mean of its divisors is an integer number (15247393).

Almost surely, 2^56633161 is an apocalyptic number.

It is an amenable number.

56633161 is a deficient number, since it is larger than the sum of its proper divisors (4356411).

56633161 is a wasteful number, since it uses less digits than its factorization.

56633161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356410.

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

The square root of 56633161 is about 7525.5007142382. The cubic root of 56633161 is about 384.0227331196.

The spelling of 56633161 in words is "fifty-six million, six hundred thirty-three thousand, one hundred sixty-one".