56891633 has 2 divisors, whose sum is σ = 56891634. Its totient is φ = 56891632.

The previous prime is 56891629. The next prime is 56891651. The reversal of 56891633 is 33619865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56806369 + 85264 = 7537^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 56891633 - 2² = 56891629 is a prime.

It is not a weakly prime, because it can be changed into another prime (56891663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28445816 + 28445817.

It is an arithmetic number, because the mean of its divisors is an integer number (28445817).

Almost surely, 2^56891633 is an apocalyptic number.

It is an amenable number.

56891633 is a deficient number, since it is larger than the sum of its proper divisors (1).

56891633 is an equidigital number, since it uses as much as digits as its factorization.

56891633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 56891633 is about 7542.6542410480. The cubic root of 56891633 is about 384.6060692113.

The spelling of 56891633 in words is "fifty-six million, eight hundred ninety-one thousand, six hundred thirty-three".