55170690 has 32 divisors (see below), whose sum is σ = 133781760. Its totient is φ = 14559744.

The previous prime is 55170683. The next prime is 55170701. The reversal of 55170690 is 9607155.

It is a super-2 number, since 2×55170690² = 6087610070152200, 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, 6570 + ... + 12389.

It is an arithmetic number, because the mean of its divisors is an integer number (4180680).

Almost surely, 2^55170690 is an apocalyptic number.

55170690 is an abundant number, since it is smaller than the sum of its proper divisors (78611070).

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

55170690 is a wasteful number, since it uses less digits than its factorization.

55170690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19066.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 55170690 is about 7427.6974898013. The cubic root of 55170690 is about 380.6882494700.

The spelling of 55170690 in words is "fifty-five million, one hundred seventy thousand, six hundred ninety".