23532515 has 4 divisors (see below), whose sum is σ = 28239024. Its totient is φ = 18826008.

The previous prime is 23532497. The next prime is 23532517. The reversal of 23532515 is 51523532.

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 23532515 - 2¹⁰ = 23531491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23532517) 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, 2353247 + ... + 2353256.

It is an arithmetic number, because the mean of its divisors is an integer number (7059756).

Almost surely, 2^23532515 is an apocalyptic number.

23532515 is a deficient number, since it is larger than the sum of its proper divisors (4706509).

23532515 is an equidigital number, since it uses as much as digits as its factorization.

23532515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706508.

The product of its digits is 4500, while the sum is 26.

The square root of 23532515 is about 4851.0323643530. The cubic root of 23532515 is about 286.5647593123.

The spelling of 23532515 in words is "twenty-three million, five hundred thirty-two thousand, five hundred fifteen".