88615521 has 12 divisors (see below), whose sum is σ = 128091600. Its totient is φ = 59034840.

The previous prime is 88615511. The next prime is 88615529. The reversal of 88615521 is 12551688.

It is not a de Polignac number, because 88615521 - 2⁵ = 88615489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88615529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14830 + ... + 19928.

It is an arithmetic number, because the mean of its divisors is an integer number (10674300).

Almost surely, 2^88615521 is an apocalyptic number.

It is an amenable number.

88615521 is a deficient number, since it is larger than the sum of its proper divisors (39476079).

88615521 is a wasteful number, since it uses less digits than its factorization.

88615521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7036 (or 7033 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 88615521 is about 9413.5817306698. The cubic root of 88615521 is about 445.8306599038.

The spelling of 88615521 in words is "eighty-eight million, six hundred fifteen thousand, five hundred twenty-one".