88538581 has 2 divisors, whose sum is σ = 88538582. Its totient is φ = 88538580.

The previous prime is 88538509. The next prime is 88538587. The reversal of 88538581 is 18583588.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 34751025 = 7334^2 + 5895^2 .

It is a cyclic number.

It is not a de Polignac number, because 88538581 - 2⁷ = 88538453 is a prime.

It is a super-2 number, since 2×88538581² = 15678160650987122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88538587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44269290 + 44269291.

It is an arithmetic number, because the mean of its divisors is an integer number (44269291).

Almost surely, 2^88538581 is an apocalyptic number.

It is an amenable number.

88538581 is a deficient number, since it is larger than the sum of its proper divisors (1).

88538581 is an equidigital number, since it uses as much as digits as its factorization.

88538581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 307200, while the sum is 46.

The square root of 88538581 is about 9409.4941946951. The cubic root of 88538581 is about 445.7015924336.

The spelling of 88538581 in words is "eighty-eight million, five hundred thirty-eight thousand, five hundred eighty-one".