55170258 has 32 divisors (see below), whose sum is σ = 129632832. Its totient is φ = 15432000.

The previous prime is 55170239. The next prime is 55170301. The reversal of 55170258 is 85207155.

It is a happy number.

55170258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31293 + ... + 33008.

It is an arithmetic number, because the mean of its divisors is an integer number (4051026).

Almost surely, 2^55170258 is an apocalyptic number.

55170258 is an abundant number, since it is smaller than the sum of its proper divisors (74462574).

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

55170258 is a wasteful number, since it uses less digits than its factorization.

55170258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64330.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 55170258 is about 7427.6684094001. The cubic root of 55170258 is about 380.6872558401.

The spelling of 55170258 in words is "fifty-five million, one hundred seventy thousand, two hundred fifty-eight".