90055427 has 16 divisors (see below), whose sum is σ = 114400512. Its totient is φ = 68845920.

The previous prime is 90055397. The next prime is 90055489. The reversal of 90055427 is 72455009.

It is not a de Polignac number, because 90055427 - 2⁶ = 90055363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90055393 and 90055402.

It is not an unprimeable number, because it can be changed into a prime (90055027) 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, 6953 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (7150032).

Almost surely, 2^90055427 is an apocalyptic number.

90055427 is a deficient number, since it is larger than the sum of its proper divisors (24345085).

90055427 is a wasteful number, since it uses less digits than its factorization.

90055427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22138.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 90055427 is about 9489.7537902730. The cubic root of 90055427 is about 448.2324523770.

The spelling of 90055427 in words is "ninety million, fifty-five thousand, four hundred twenty-seven".