90115045 has 8 divisors (see below), whose sum is σ = 114499224. Its totient is φ = 67851264.

The previous prime is 90115033. The next prime is 90115073. The reversal of 90115045 is 54051109.

It can be written as a sum of positive squares in 4 ways, for example, as 14737921 + 75377124 = 3839^2 + 8682^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90115045 - 2⁷ = 90114917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530004 + ... + 530173.

It is an arithmetic number, because the mean of its divisors is an integer number (14312403).

Almost surely, 2^90115045 is an apocalyptic number.

It is an amenable number.

90115045 is a deficient number, since it is larger than the sum of its proper divisors (24384179).

90115045 is a wasteful number, since it uses less digits than its factorization.

90115045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060199.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 90115045 is about 9492.8944479542. The cubic root of 90115045 is about 448.3313426880.

The spelling of 90115045 in words is "ninety million, one hundred fifteen thousand, forty-five".