55210566 has 16 divisors (see below), whose sum is σ = 113983488. Its totient is φ = 17809800.

The previous prime is 55210553. The next prime is 55210591. The reversal of 55210566 is 66501255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148230 + ... + 148601.

It is an arithmetic number, because the mean of its divisors is an integer number (7123968).

Almost surely, 2^55210566 is an apocalyptic number.

55210566 is an abundant number, since it is smaller than the sum of its proper divisors (58772922).

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

55210566 is a wasteful number, since it uses less digits than its factorization.

55210566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296867.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55210566 is about 7430.3812822762. The cubic root of 55210566 is about 380.7799447089.

The spelling of 55210566 in words is "fifty-five million, two hundred ten thousand, five hundred sixty-six".