55633385 has 8 divisors (see below), whose sum is σ = 68564616. Its totient is φ = 43303680.

The previous prime is 55633381. The next prime is 55633393. The reversal of 55633385 is 58333655.

It can be written as a sum of positive squares in 4 ways, for example, as 12652249 + 42981136 = 3557^2 + 6556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55633385 - 2² = 55633381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55633381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150176 + ... + 150545.

It is an arithmetic number, because the mean of its divisors is an integer number (8570577).

Almost surely, 2^55633385 is an apocalyptic number.

It is an amenable number.

55633385 is a deficient number, since it is larger than the sum of its proper divisors (12931231).

55633385 is a wasteful number, since it uses less digits than its factorization.

55633385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300763.

The product of its digits is 162000, while the sum is 38.

The square root of 55633385 is about 7458.7790555828. The cubic root of 55633385 is about 381.7495159880.

The spelling of 55633385 in words is "fifty-five million, six hundred thirty-three thousand, three hundred eighty-five".