9090250 has 32 divisors (see below), whose sum is σ = 18332496. Its totient is φ = 3355200.

The previous prime is 9090247. The next prime is 9090251. The reversal of 9090250 is 520909.

It can be written as a sum of positive squares in 8 ways, for example, as 108241 + 8982009 = 329^2 + 2997^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1852 + ... + 4648.

Almost surely, 2^9090250 is an apocalyptic number.

9090250 is an abundant number, since it is smaller than the sum of its proper divisors (9242246).

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

9090250 is a wasteful number, since it uses less digits than its factorization.

9090250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 9090250 is about 3015.0041459341. The cubic root of 9090250 is about 208.7013583824.

Subtracting from 9090250 its sum of digits (25), we obtain a square (9090225 = 3015²).

It can be divided in two parts, 90 and 90250, that multiplied together give a square (8122500 = 2850²).

The spelling of 9090250 in words is "nine million, ninety thousand, two hundred fifty".