232505021 has 4 divisors (see below), whose sum is σ = 265720032. Its totient is φ = 199290012.

The previous prime is 232504949. The next prime is 232505041. The reversal of 232505021 is 120505232.

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 232505021 - 2¹⁸ = 232242877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232504984 and 232505002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232505041) 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, 16607495 + ... + 16607508.

It is an arithmetic number, because the mean of its divisors is an integer number (66430008).

Almost surely, 2^232505021 is an apocalyptic number.

It is an amenable number.

232505021 is a deficient number, since it is larger than the sum of its proper divisors (33215011).

232505021 is an equidigital number, since it uses as much as digits as its factorization.

232505021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33215010.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 232505021 is about 15248.1153261641. The cubic root of 232505021 is about 614.9088996308.

The spelling of 232505021 in words is "two hundred thirty-two million, five hundred five thousand, twenty-one".