55170396 has 30 divisors (see below), whose sum is σ = 144227160. Its totient is φ = 18390024.

The previous prime is 55170391. The next prime is 55170397. The reversal of 55170396 is 69307155.

It is a happy number.

55170396 is a `hidden beast` number, since 551 + 70 + 39 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55170396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55170391) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84816 + ... + 85463.

It is an arithmetic number, because the mean of its divisors is an integer number (4807572).

Almost surely, 2^55170396 is an apocalyptic number.

It is an amenable number.

55170396 is an abundant number, since it is smaller than the sum of its proper divisors (89056764).

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

55170396 is a wasteful number, since it uses less digits than its factorization.

55170396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170295 (or 170284 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 55170396 is about 7427.6776989851. The cubic root of 55170396 is about 380.6875732502.

The spelling of 55170396 in words is "fifty-five million, one hundred seventy thousand, three hundred ninety-six".