55085810 has 32 divisors (see below), whose sum is σ = 107110080. Its totient is φ = 20276928.

The previous prime is 55085773. The next prime is 55085861. The reversal of 55085810 is 1858055.

It is a super-2 number, since 2×55085810² = 6068892926712200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83261 + ... + 83919.

It is an arithmetic number, because the mean of its divisors is an integer number (3347190).

Almost surely, 2^55085810 is an apocalyptic number.

55085810 is a deficient number, since it is larger than the sum of its proper divisors (52024270).

55085810 is a wasteful number, since it uses less digits than its factorization.

55085810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322.

The product of its (nonzero) digits is 8000, while the sum is 32.

The square root of 55085810 is about 7421.9815413406. The cubic root of 55085810 is about 380.4929198855.

The spelling of 55085810 in words is "fifty-five million, eighty-five thousand, eight hundred ten".