55455190 has 32 divisors (see below), whose sum is σ = 120792384. Its totient is φ = 17894400.

The previous prime is 55455181. The next prime is 55455199. The reversal of 55455190 is 9155455.

It is an interprime number because it is at equal distance from previous prime (55455181) and next prime (55455199).

It is a super-2 number, since 2×55455190² = 6150556195872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22111 + ... + 24490.

It is an arithmetic number, because the mean of its divisors is an integer number (3774762).

Almost surely, 2^55455190 is an apocalyptic number.

55455190 is an abundant number, since it is smaller than the sum of its proper divisors (65337194).

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

55455190 is a wasteful number, since it uses less digits than its factorization.

55455190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46632.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 55455190 is about 7446.8241553027. The cubic root of 55455190 is about 381.3414959117.

The spelling of 55455190 in words is "fifty-five million, four hundred fifty-five thousand, one hundred ninety".