88451521 has 2 divisors, whose sum is σ = 88451522. Its totient is φ = 88451520.

The previous prime is 88451513. The next prime is 88451533. The reversal of 88451521 is 12515488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76755121 + 11696400 = 8761^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 88451521 - 2³ = 88451513 is a prime.

It is not a weakly prime, because it can be changed into another prime (88451551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44225760 + 44225761.

It is an arithmetic number, because the mean of its divisors is an integer number (44225761).

Almost surely, 2^88451521 is an apocalyptic number.

It is an amenable number.

88451521 is a deficient number, since it is larger than the sum of its proper divisors (1).

88451521 is an equidigital number, since it uses as much as digits as its factorization.

88451521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 34.

The square root of 88451521 is about 9404.8668783774. The cubic root of 88451521 is about 445.5554583777. Note that the first 3 decimals are identical.

The spelling of 88451521 in words is "eighty-eight million, four hundred fifty-one thousand, five hundred twenty-one".