55989633 has 32 divisors (see below), whose sum is σ = 89337600. Its totient is φ = 30514176.

The previous prime is 55989623. The next prime is 55989671. The reversal of 55989633 is 33698955.

It is not a de Polignac number, because 55989633 - 2⁸ = 55989377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55989623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53685 + ... + 54717.

It is an arithmetic number, because the mean of its divisors is an integer number (2791800).

Almost surely, 2^55989633 is an apocalyptic number.

It is an amenable number.

55989633 is a deficient number, since it is larger than the sum of its proper divisors (33347967).

55989633 is a wasteful number, since it uses less digits than its factorization.

55989633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 874800, while the sum is 48.

The square root of 55989633 is about 7482.6220671634. The cubic root of 55989633 is about 382.5626263385.

The spelling of 55989633 in words is "fifty-five million, nine hundred eighty-nine thousand, six hundred thirty-three".