88357981 has 2 divisors, whose sum is σ = 88357982. Its totient is φ = 88357980.

The previous prime is 88357957. The next prime is 88358057. The reversal of 88357981 is 18975388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71825625 + 16532356 = 8475^2 + 4066^2 .

It is a cyclic number.

It is not a de Polignac number, because 88357981 - 2⁵ = 88357949 is a prime.

It is a super-2 number, since 2×88357981² = 15614265612792722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88357901) 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, 44178990 + 44178991.

It is an arithmetic number, because the mean of its divisors is an integer number (44178991).

Almost surely, 2^88357981 is an apocalyptic number.

It is an amenable number.

88357981 is a deficient number, since it is larger than the sum of its proper divisors (1).

88357981 is an equidigital number, since it uses as much as digits as its factorization.

88357981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 88357981 is about 9399.8926057695. The cubic root of 88357981 is about 445.3983404545.

The spelling of 88357981 in words is "eighty-eight million, three hundred fifty-seven thousand, nine hundred eighty-one".