232561015 has 4 divisors (see below), whose sum is σ = 279073224. Its totient is φ = 186048808.

The previous prime is 232561013. The next prime is 232561019. The reversal of 232561015 is 510165232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232561015 - 2¹ = 232561013 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232561013) 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, 23256097 + ... + 23256106.

It is an arithmetic number, because the mean of its divisors is an integer number (69768306).

Almost surely, 2^232561015 is an apocalyptic number.

232561015 is a deficient number, since it is larger than the sum of its proper divisors (46512209).

232561015 is an equidigital number, since it uses as much as digits as its factorization.

232561015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46512208.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 232561015 is about 15249.9513113977. The cubic root of 232561015 is about 614.9582583431.

It can be divided in two parts, 2325610 and 15, that added together give a square (2325625 = 1525²).

The spelling of 232561015 in words is "two hundred thirty-two million, five hundred sixty-one thousand, fifteen".