90055470 has 32 divisors (see below), whose sum is σ = 216933408. Its totient is φ = 23925888.

The previous prime is 90055397. The next prime is 90055489. The reversal of 90055470 is 7455009.

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, 2892 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (6779169).

Almost surely, 2^90055470 is an apocalyptic number.

90055470 is an abundant number, since it is smaller than the sum of its proper divisors (126877938).

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

90055470 is a wasteful number, since it uses less digits than its factorization.

90055470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11124.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 90055470 is about 9489.7560558741. The cubic root of 90055470 is about 448.2325237182.

It can be divided in two parts, 90055 and 470, that added together give a triangular number (90525 = T₄₂₅).

The spelling of 90055470 in words is "ninety million, fifty-five thousand, four hundred seventy".