90274545 has 24 divisors (see below), whose sum is σ = 159808896. Its totient is φ = 47120928.

The previous prime is 90274537. The next prime is 90274553. The reversal of 90274545 is 54547209.

90274545 is a `hidden beast` number, since 90 + 27 + 4 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (90274537) and next prime (90274553).

It is not a de Polignac number, because 90274545 - 2³ = 90274537 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19227 + ... + 23456.

It is an arithmetic number, because the mean of its divisors is an integer number (6658704).

Almost surely, 2^90274545 is an apocalyptic number.

It is an amenable number.

90274545 is a deficient number, since it is larger than the sum of its proper divisors (69534351).

90274545 is a wasteful number, since it uses less digits than its factorization.

90274545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42741 (or 42738 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 90274545 is about 9501.2917542827. The cubic root of 90274545 is about 448.5956962572.

The spelling of 90274545 in words is "ninety million, two hundred seventy-four thousand, five hundred forty-five".