23461521 has 4 divisors (see below), whose sum is σ = 31282032. Its totient is φ = 15641012.

The previous prime is 23461517. The next prime is 23461567. The reversal of 23461521 is 12516432.

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 23461521 - 2² = 23461517 is a prime.

It is a super-3 number, since 3×23461521³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23461491 and 23461500.

It is not an unprimeable number, because it can be changed into a prime (23461511) 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, 3910251 + ... + 3910256.

It is an arithmetic number, because the mean of its divisors is an integer number (7820508).

Almost surely, 2^23461521 is an apocalyptic number.

It is an amenable number.

23461521 is a deficient number, since it is larger than the sum of its proper divisors (7820511).

23461521 is an equidigital number, since it uses as much as digits as its factorization.

23461521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820510.

The product of its digits is 1440, while the sum is 24.

The square root of 23461521 is about 4843.7094256365. The cubic root of 23461521 is about 286.2762950108.

Adding to 23461521 its reverse (12516432), we get a palindrome (35977953).

The spelling of 23461521 in words is "twenty-three million, four hundred sixty-one thousand, five hundred twenty-one".