89510521 has 3 divisors (see below), whose sum is σ = 89519983. Its totient is φ = 89501060.

The previous prime is 89510479. The next prime is 89510527. The reversal of 89510521 is 12501598.

The square root of 89510521 is 9461.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12501598 = 2 ⋅6250799.

It can be written as a sum of positive squares in only one way, i.e., 67420521 + 22090000 = 8211^2 + 4700^2 .

It is not a de Polignac number, because 89510521 - 2¹¹ = 89508473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89510527) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4731 + ... + 14191.

Almost surely, 2^89510521 is an apocalyptic number.

89510521 is the 9461-st square number.

89510521 is the 4731-st centered octagonal number.

It is an amenable number.

89510521 is a deficient number, since it is larger than the sum of its proper divisors (9462).

89510521 is an frugal number, since it uses more digits than its factorization.

89510521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18922 (or 9461 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The cubic root of 89510521 is about 447.3265701247.

Multiplying 89510521 by its product of nonzero digits (3600), we get a square (322237875600 = 567660²).

The spelling of 89510521 in words is "eighty-nine million, five hundred ten thousand, five hundred twenty-one".