89702521 has 4 divisors (see below), whose sum is σ = 89753344. Its totient is φ = 89651700.

The previous prime is 89702519. The next prime is 89702527. The reversal of 89702521 is 12520798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89702521 - 2¹ = 89702519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89702527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22665 + ... + 26326.

It is an arithmetic number, because the mean of its divisors is an integer number (22438336).

Almost surely, 2^89702521 is an apocalyptic number.

It is an amenable number.

89702521 is a deficient number, since it is larger than the sum of its proper divisors (50823).

89702521 is a wasteful number, since it uses less digits than its factorization.

89702521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50822.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 89702521 is about 9471.1414834749. The cubic root of 89702521 is about 447.6461800976.

The spelling of 89702521 in words is "eighty-nine million, seven hundred two thousand, five hundred twenty-one".