55502566 has 16 divisors (see below), whose sum is σ = 95245056. Its totient is φ = 23762376.

The previous prime is 55502563. The next prime is 55502593. The reversal of 55502566 is 66520555.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55502563) 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, 21265 + ... + 23731.

It is an arithmetic number, because the mean of its divisors is an integer number (5952816).

Almost surely, 2^55502566 is an apocalyptic number.

55502566 is a deficient number, since it is larger than the sum of its proper divisors (39742490).

55502566 is a wasteful number, since it uses less digits than its factorization.

55502566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 55502566 is about 7450.0044295289. The cubic root of 55502566 is about 381.4500597953.

The spelling of 55502566 in words is "fifty-five million, five hundred two thousand, five hundred sixty-six".