55030590 has 40 divisors (see below), whose sum is σ = 147973320. Its totient is φ = 14674608.

The previous prime is 55030567. The next prime is 55030597. The reversal of 55030590 is 9503055.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55030597) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33160 + ... + 34779.

It is an arithmetic number, because the mean of its divisors is an integer number (3699333).

Almost surely, 2^55030590 is an apocalyptic number.

55030590 is an abundant number, since it is smaller than the sum of its proper divisors (92942730).

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

55030590 is a wasteful number, since it uses less digits than its factorization.

55030590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67958 (or 67949 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

The square root of 55030590 is about 7418.2605777905. The cubic root of 55030590 is about 380.3657374429.

The spelling of 55030590 in words is "fifty-five million, thirty thousand, five hundred ninety".