55633290 has 32 divisors (see below), whose sum is σ = 134709696. Its totient is φ = 14703360.

The previous prime is 55633267. The next prime is 55633307. The reversal of 55633290 is 9233655.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4816 + ... + 11595.

It is an arithmetic number, because the mean of its divisors is an integer number (4209678).

Almost surely, 2^55633290 is an apocalyptic number.

55633290 is an abundant number, since it is smaller than the sum of its proper divisors (79076406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55633290 is a wasteful number, since it uses less digits than its factorization.

55633290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16534.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 55633290 is about 7458.7726872455. The cubic root of 55633290 is about 381.7492986951.

The spelling of 55633290 in words is "fifty-five million, six hundred thirty-three thousand, two hundred ninety".