152581601 has 2 divisors, whose sum is σ = 152581602. Its totient is φ = 152581600.

The previous prime is 152581591. The next prime is 152581603. The reversal of 152581601 is 106185251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136773025 + 15808576 = 11695^2 + 3976^2 .

It is a cyclic number.

It is not a de Polignac number, because 152581601 - 2⁶ = 152581537 is a prime.

It is a super-2 number, since 2×152581601² = 46562289927446402, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 152581603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (152581603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76290800 + 76290801.

It is an arithmetic number, because the mean of its divisors is an integer number (76290801).

Almost surely, 2^152581601 is an apocalyptic number.

It is an amenable number.

152581601 is a deficient number, since it is larger than the sum of its proper divisors (1).

152581601 is an equidigital number, since it uses as much as digits as its factorization.

152581601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 152581601 is about 12352.3925212891. The cubic root of 152581601 is about 534.3601410822.

The spelling of 152581601 in words is "one hundred fifty-two million, five hundred eighty-one thousand, six hundred one".