152021081 has 2 divisors, whose sum is σ = 152021082. Its totient is φ = 152021080.

The previous prime is 152021017. The next prime is 152021087. The reversal of 152021081 is 180120251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150307600 + 1713481 = 12260^2 + 1309^2 .

It is a cyclic number.

It is not a de Polignac number, because 152021081 - 2⁶ = 152021017 is a prime.

It is a super-2 number, since 2×152021081² = 46220818136817122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (152021087) 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, 76010540 + 76010541.

It is an arithmetic number, because the mean of its divisors is an integer number (76010541).

Almost surely, 2^152021081 is an apocalyptic number.

It is an amenable number.

152021081 is a deficient number, since it is larger than the sum of its proper divisors (1).

152021081 is an equidigital number, since it uses as much as digits as its factorization.

152021081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 152021081 is about 12329.6829237414. The cubic root of 152021081 is about 533.7050007860.

The spelling of 152021081 in words is "one hundred fifty-two million, twenty-one thousand, eighty-one".