88015221 has 48 divisors (see below), whose sum is σ = 153982080. Its totient is φ = 49533120.

The previous prime is 88015199. The next prime is 88015223. The reversal of 88015221 is 12251088.

It is not a de Polignac number, because 88015221 - 2⁵ = 88015189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88015223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93465 + ... + 94401.

It is an arithmetic number, because the mean of its divisors is an integer number (3207960).

Almost surely, 2^88015221 is an apocalyptic number.

It is an amenable number.

88015221 is a deficient number, since it is larger than the sum of its proper divisors (65966859).

88015221 is a wasteful number, since it uses less digits than its factorization.

88015221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 88015221 is about 9381.6427665948. The cubic root of 88015221 is about 444.8216614847.

The spelling of 88015221 in words is "eighty-eight million, fifteen thousand, two hundred twenty-one".