88331557 has 2 divisors, whose sum is σ = 88331558. Its totient is φ = 88331556.

The previous prime is 88331539. The next prime is 88331611. The reversal of 88331557 is 75513388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53450721 + 34880836 = 7311^2 + 5906^2 .

It is a cyclic number.

It is not a de Polignac number, because 88331557 - 2²³ = 79942949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88331357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44165778 + 44165779.

It is an arithmetic number, because the mean of its divisors is an integer number (44165779).

Almost surely, 2^88331557 is an apocalyptic number.

It is an amenable number.

88331557 is a deficient number, since it is larger than the sum of its proper divisors (1).

88331557 is an equidigital number, since it uses as much as digits as its factorization.

88331557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 88331557 is about 9398.4869526962. The cubic root of 88331557 is about 445.3539363195.

It can be divided in two parts, 88331 and 557, that added together give a palindrome (88888).

The spelling of 88331557 in words is "eighty-eight million, three hundred thirty-one thousand, five hundred fifty-seven".