152995681 has 2 divisors, whose sum is σ = 152995682. Its totient is φ = 152995680.

The previous prime is 152995649. The next prime is 152995693. The reversal of 152995681 is 186599251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111830625 + 41165056 = 10575^2 + 6416^2 .

It is a cyclic number.

It is not a de Polignac number, because 152995681 - 2⁵ = 152995649 is a prime.

It is a super-2 number, since 2×152995681² = 46815356809307522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (152995621) 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, 76497840 + 76497841.

It is an arithmetic number, because the mean of its divisors is an integer number (76497841).

Almost surely, 2^152995681 is an apocalyptic number.

It is an amenable number.

152995681 is a deficient number, since it is larger than the sum of its proper divisors (1).

152995681 is an equidigital number, since it uses as much as digits as its factorization.

152995681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 46.

The square root of 152995681 is about 12369.1422903935. The cubic root of 152995681 is about 534.8430913771.

The spelling of 152995681 in words is "one hundred fifty-two million, nine hundred ninety-five thousand, six hundred eighty-one".