87525390 has 16 divisors (see below), whose sum is σ = 210061008. Its totient is φ = 23340096.

The previous prime is 87525377. The next prime is 87525397. The reversal of 87525390 is 9352578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87525397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458727 + ... + 1458786.

It is an arithmetic number, because the mean of its divisors is an integer number (13128813).

Almost surely, 2^87525390 is an apocalyptic number.

87525390 is an abundant number, since it is smaller than the sum of its proper divisors (122535618).

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

87525390 is a wasteful number, since it uses less digits than its factorization.

87525390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917523.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 87525390 is about 9355.5005210838. The cubic root of 87525390 is about 443.9949374473.

The spelling of 87525390 in words is "eighty-seven million, five hundred twenty-five thousand, three hundred ninety".