55158085 has 16 divisors (see below), whose sum is σ = 67564800. Its totient is φ = 43217856.

The previous prime is 55158067. The next prime is 55158113. The reversal of 55158085 is 58085155.

It is a cyclic number.

It is not a de Polignac number, because 55158085 - 2⁹ = 55157573 is a prime.

It is a congruent number.

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, 76356 + ... + 77074.

It is an arithmetic number, because the mean of its divisors is an integer number (4222800).

Almost surely, 2^55158085 is an apocalyptic number.

It is an amenable number.

55158085 is a deficient number, since it is larger than the sum of its proper divisors (12406715).

55158085 is a wasteful number, since it uses less digits than its factorization.

55158085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 40000, while the sum is 37.

The square root of 55158085 is about 7426.8489280448. The cubic root of 55158085 is about 380.6592549630.

The spelling of 55158085 in words is "fifty-five million, one hundred fifty-eight thousand, eighty-five".