90157250 has 32 divisors (see below), whose sum is σ = 169923312. Its totient is φ = 35817600.

The previous prime is 90157229. The next prime is 90157289. The reversal of 90157250 is 5275109.

It can be written as a sum of positive squares in 8 ways, for example, as 305809 + 89851441 = 553^2 + 9479^2 .

It is a Curzon 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, 38102 + ... + 40398.

Almost surely, 2^90157250 is an apocalyptic number.

90157250 is a deficient number, since it is larger than the sum of its proper divisors (79766062).

90157250 is a wasteful number, since it uses less digits than its factorization.

90157250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 2461 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 90157250 is about 9495.1171662071. The cubic root of 90157250 is about 448.4013231266.

The spelling of 90157250 in words is "ninety million, one hundred fifty-seven thousand, two hundred fifty".