152490921 has 16 divisors (see below), whose sum is σ = 223300800. Its totient is φ = 91795520.

The previous prime is 152490917. The next prime is 152490929. The reversal of 152490921 is 129094251.

152490921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 152490921 - 2² = 152490917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (152490929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10590 + ... + 20423.

It is an arithmetic number, because the mean of its divisors is an integer number (13956300).

Almost surely, 2^152490921 is an apocalyptic number.

152490921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152490921 is a deficient number, since it is larger than the sum of its proper divisors (70809879).

152490921 is a wasteful number, since it uses less digits than its factorization.

152490921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31176.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 152490921 is about 12348.7214317920. The cubic root of 152490921 is about 534.2542624800.

The spelling of 152490921 in words is "one hundred fifty-two million, four hundred ninety thousand, nine hundred twenty-one".