90901512 has 48 divisors (see below), whose sum is σ = 265132140. Its totient is φ = 27969408.

The previous prime is 90901511. The next prime is 90901561. The reversal of 90901512 is 21510909.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90897156 + 4356 = 9534^2 + 66^2 .

It is a super-2 number, since 2×90901512² = 16526169767772288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90901511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47623 + ... + 49494.

Almost surely, 2^90901512 is an apocalyptic number.

It is an amenable number.

90901512 is an abundant number, since it is smaller than the sum of its proper divisors (174230628).

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

90901512 is a wasteful number, since it uses less digits than its factorization.

90901512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97142 (or 97135 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 90901512 is about 9534.2284428264. The cubic root of 90901512 is about 449.6318173597.

The spelling of 90901512 in words is "ninety million, nine hundred one thousand, five hundred twelve".