23412521 has 8 divisors (see below), whose sum is σ = 25601664. Its totient is φ = 21233520.

The previous prime is 23412509. The next prime is 23412569. The reversal of 23412521 is 12521432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23412521 - 2¹⁴ = 23396137 is a prime.

It is a super-2 number, since 2×23412521² = 1096292279150882, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23412493 and 23412502.

It is not an unprimeable number, because it can be changed into a prime (23412421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2795 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (3200208).

Almost surely, 2^23412521 is an apocalyptic number.

It is an amenable number.

23412521 is a deficient number, since it is larger than the sum of its proper divisors (2189143).

23412521 is a wasteful number, since it uses less digits than its factorization.

23412521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071.

The product of its digits is 480, while the sum is 20.

The square root of 23412521 is about 4838.6486749918. The cubic root of 23412521 is about 286.0768575939.

Adding to 23412521 its reverse (12521432), we get a palindrome (35933953).

The spelling of 23412521 in words is "twenty-three million, four hundred twelve thousand, five hundred twenty-one".