55155858 has 8 divisors (see below), whose sum is σ = 110311728. Its totient is φ = 18385284.

The previous prime is 55155839. The next prime is 55155887. The reversal of 55155858 is 85855155.

It is a sphenic number, since it is the product of 3 distinct primes.

55155858 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4596316 + ... + 4596327.

It is an arithmetic number, because the mean of its divisors is an integer number (13788966).

Almost surely, 2^55155858 is an apocalyptic number.

55155858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55155858 is a wasteful number, since it uses less digits than its factorization.

55155858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9192648.

The product of its digits is 200000, while the sum is 42.

The square root of 55155858 is about 7426.6989975359. The cubic root of 55155858 is about 380.6541318726.

The spelling of 55155858 in words is "fifty-five million, one hundred fifty-five thousand, eight hundred fifty-eight".