152767921 has 2 divisors, whose sum is σ = 152767922. Its totient is φ = 152767920.

The previous prime is 152767913. The next prime is 152767943. The reversal of 152767921 is 129767251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151413025 + 1354896 = 12305^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 152767921 - 2³ = 152767913 is a prime.

It is not a weakly prime, because it can be changed into another prime (152767981) 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, 76383960 + 76383961.

It is an arithmetic number, because the mean of its divisors is an integer number (76383961).

Almost surely, 2^152767921 is an apocalyptic number.

It is an amenable number.

152767921 is a deficient number, since it is larger than the sum of its proper divisors (1).

152767921 is an equidigital number, since it uses as much as digits as its factorization.

152767921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 40.

The square root of 152767921 is about 12359.9320791014. The cubic root of 152767921 is about 534.5775580418.

The spelling of 152767921 in words is "one hundred fifty-two million, seven hundred sixty-seven thousand, nine hundred twenty-one".