232154521 has 4 divisors (see below), whose sum is σ = 244373200. Its totient is φ = 219935844.

The previous prime is 232154519. The next prime is 232154537. The reversal of 232154521 is 125451232.

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 232154521 - 2¹ = 232154519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232154551) 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, 6109311 + ... + 6109348.

It is an arithmetic number, because the mean of its divisors is an integer number (61093300).

Almost surely, 2^232154521 is an apocalyptic number.

It is an amenable number.

232154521 is a deficient number, since it is larger than the sum of its proper divisors (12218679).

232154521 is a wasteful number, since it uses less digits than its factorization.

232154521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12218678.

The product of its digits is 2400, while the sum is 25.

The square root of 232154521 is about 15236.6177677331. The cubic root of 232154521 is about 614.5997536743.

The spelling of 232154521 in words is "two hundred thirty-two million, one hundred fifty-four thousand, five hundred twenty-one".