89240521 has 4 divisors (see below), whose sum is σ = 90315792. Its totient is φ = 88165252.

The previous prime is 89240513. The next prime is 89240563. The reversal of 89240521 is 12504298.

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 89240521 - 2³ = 89240513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89240581) 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, 537511 + ... + 537676.

It is an arithmetic number, because the mean of its divisors is an integer number (22578948).

Almost surely, 2^89240521 is an apocalyptic number.

It is an amenable number.

89240521 is a deficient number, since it is larger than the sum of its proper divisors (1075271).

89240521 is a wasteful number, since it uses less digits than its factorization.

89240521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075270.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 89240521 is about 9446.7201186444. The cubic root of 89240521 is about 446.8763444040.

The spelling of 89240521 in words is "eighty-nine million, two hundred forty thousand, five hundred twenty-one".