88311521 has 2 divisors, whose sum is σ = 88311522. Its totient is φ = 88311520.

The previous prime is 88311511. The next prime is 88311527. The reversal of 88311521 is 12511388.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67881121 + 20430400 = 8239^2 + 4520^2 .

It is a cyclic number.

It is not a de Polignac number, because 88311521 - 2²² = 84117217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88311527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44155760 + 44155761.

It is an arithmetic number, because the mean of its divisors is an integer number (44155761).

Almost surely, 2^88311521 is an apocalyptic number.

It is an amenable number.

88311521 is a deficient number, since it is larger than the sum of its proper divisors (1).

88311521 is an equidigital number, since it uses as much as digits as its factorization.

88311521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 29.

The square root of 88311521 is about 9397.4209759912. The cubic root of 88311521 is about 445.3202609773.

The spelling of 88311521 in words is "eighty-eight million, three hundred eleven thousand, five hundred twenty-one".