55910190 has 32 divisors (see below), whose sum is σ = 153354240. Its totient is φ = 12779424.

The previous prime is 55910167. The next prime is 55910207. The reversal of 55910190 is 9101955.

It is a super-2 number, since 2×55910190² = 6251898691672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 132910 + ... + 133329.

It is an arithmetic number, because the mean of its divisors is an integer number (4792320).

Almost surely, 2^55910190 is an apocalyptic number.

55910190 is an abundant number, since it is smaller than the sum of its proper divisors (97444050).

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

55910190 is a wasteful number, since it uses less digits than its factorization.

55910190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266256.

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 55910190 is about 7477.3116826838. The cubic root of 55910190 is about 382.3816028961.

It can be divided in two parts, 5 and 5910190, that added together give a palindrome (5910195).

The spelling of 55910190 in words is "fifty-five million, nine hundred ten thousand, one hundred ninety".