152929981 has 2 divisors, whose sum is σ = 152929982. Its totient is φ = 152929980.

The previous prime is 152929969. The next prime is 152929999. The reversal of 152929981 is 189929251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105884100 + 47045881 = 10290^2 + 6859^2 .

It is a cyclic number.

It is not a de Polignac number, because 152929981 - 2²⁵ = 119375549 is a prime.

It is a super-2 number, since 2×152929981² = 46775158177320722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152929951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76464990 + 76464991.

It is an arithmetic number, because the mean of its divisors is an integer number (76464991).

Almost surely, 2^152929981 is an apocalyptic number.

It is an amenable number.

152929981 is a deficient number, since it is larger than the sum of its proper divisors (1).

152929981 is an equidigital number, since it uses as much as digits as its factorization.

152929981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 46.

The square root of 152929981 is about 12366.4862026365. The cubic root of 152929981 is about 534.7665222828.

The spelling of 152929981 in words is "one hundred fifty-two million, nine hundred twenty-nine thousand, nine hundred eighty-one".