55365550 has 24 divisors (see below), whose sum is σ = 103247856. Its totient is φ = 22088640.

The previous prime is 55365529. The next prime is 55365551. The reversal of 55365550 is 5556355.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55365551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21639 + ... + 24061.

It is an arithmetic number, because the mean of its divisors is an integer number (4301994).

Almost surely, 2^55365550 is an apocalyptic number.

55365550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55365550 is a deficient number, since it is larger than the sum of its proper divisors (47882306).

55365550 is a wasteful number, since it uses less digits than its factorization.

55365550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 34.

The square root of 55365550 is about 7440.8030480587. The cubic root of 55365550 is about 381.1359131896.

The spelling of 55365550 in words is "fifty-five million, three hundred sixty-five thousand, five hundred fifty".