90251253 has 10 divisors (see below), whose sum is σ = 134819894. Its totient is φ = 60167448.

The previous prime is 90251221. The next prime is 90251257. The reversal of 90251253 is 35215209.

It can be written as a sum of positive squares in only one way, i.e., 79869969 + 10381284 = 8937^2 + 3222^2 .

It is not a de Polignac number, because 90251253 - 2⁵ = 90251221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90251257) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 557026 + ... + 557187.

Almost surely, 2^90251253 is an apocalyptic number.

It is an amenable number.

90251253 is a deficient number, since it is larger than the sum of its proper divisors (44568641).

90251253 is a wasteful number, since it uses less digits than its factorization.

90251253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114225 (or 1114216 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 90251253 is about 9500.0659471395. The cubic root of 90251253 is about 448.5571117750.

The spelling of 90251253 in words is "ninety million, two hundred fifty-one thousand, two hundred fifty-three".