55633655 has 32 divisors (see below), whose sum is σ = 84284928. Its totient is φ = 34243200.

The previous prime is 55633649. The next prime is 55633657.

It is a happy number.

55633655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55633655 - 2²² = 51439351 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55633657) 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, 31085 + ... + 32825.

It is an arithmetic number, because the mean of its divisors is an integer number (2633904).

Almost surely, 2^55633655 is an apocalyptic number.

55633655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55633655 is a deficient number, since it is larger than the sum of its proper divisors (28651273).

55633655 is a wasteful number, since it uses less digits than its factorization.

55633655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847.

The product of its digits is 202500, while the sum is 38.

The square root of 55633655 is about 7458.7971550378. The cubic root of 55633655 is about 381.7501335561.

The spelling of 55633655 in words is "fifty-five million, six hundred thirty-three thousand, six hundred fifty-five".