89521518 has 16 divisors (see below), whose sum is σ = 179726976. Its totient is φ = 29726520.

The previous prime is 89521517. The next prime is 89521547. The reversal of 89521518 is 81512598.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89521517) 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, 26788 + ... + 29943.

It is an arithmetic number, because the mean of its divisors is an integer number (11232936).

Almost surely, 2^89521518 is an apocalyptic number.

89521518 is an abundant number, since it is smaller than the sum of its proper divisors (90205458).

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

89521518 is a wasteful number, since it uses less digits than its factorization.

89521518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56999.

The product of its digits is 28800, while the sum is 39.

The square root of 89521518 is about 9461.5811575022. The cubic root of 89521518 is about 447.3448884512.

The spelling of 89521518 in words is "eighty-nine million, five hundred twenty-one thousand, five hundred eighteen".