152992921 has 4 divisors (see below), whose sum is σ = 161045200. Its totient is φ = 144940644.

The previous prime is 152992907. The next prime is 152992937. The reversal of 152992921 is 129299251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 152992921 - 2⁷ = 152992793 is a prime.

It is a super-3 number, since 3×152992921³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152993921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026111 + ... + 4026148.

It is an arithmetic number, because the mean of its divisors is an integer number (40261300).

Almost surely, 2^152992921 is an apocalyptic number.

It is an amenable number.

152992921 is a deficient number, since it is larger than the sum of its proper divisors (8052279).

152992921 is an equidigital number, since it uses as much as digits as its factorization.

152992921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052278.

The product of its digits is 29160, while the sum is 40.

The square root of 152992921 is about 12369.0307219281. The cubic root of 152992921 is about 534.8398752170.

The spelling of 152992921 in words is "one hundred fifty-two million, nine hundred ninety-two thousand, nine hundred twenty-one".