88238581 has 2 divisors, whose sum is σ = 88238582. Its totient is φ = 88238580.

The previous prime is 88238573. The next prime is 88238597. The reversal of 88238581 is 18583288.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84015556 + 4223025 = 9166^2 + 2055^2 .

It is a cyclic number.

It is not a de Polignac number, because 88238581 - 2³ = 88238573 is a prime.

It is a super-2 number, since 2×88238581² = 15572094353787122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88238981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44119290 + 44119291.

It is an arithmetic number, because the mean of its divisors is an integer number (44119291).

Almost surely, 2^88238581 is an apocalyptic number.

It is an amenable number.

88238581 is a deficient number, since it is larger than the sum of its proper divisors (1).

88238581 is an equidigital number, since it uses as much as digits as its factorization.

88238581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 43.

The square root of 88238581 is about 9393.5393223215. The cubic root of 88238581 is about 445.1976246319.

The spelling of 88238581 in words is "eighty-eight million, two hundred thirty-eight thousand, five hundred eighty-one".