23124521 has 6 divisors (see below), whose sum is σ = 26900010. Its totient is φ = 19820976.

The previous prime is 23124511. The next prime is 23124529. The reversal of 23124521 is 12542132.

It can be written as a sum of positive squares in only one way, i.e., 22992025 + 132496 = 4795^2 + 364^2 .

It is not a de Polignac number, because 23124521 - 2¹⁰ = 23123497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23124493 and 23124502.

It is not an unprimeable number, because it can be changed into a prime (23124529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235916 + ... + 236013.

It is an arithmetic number, because the mean of its divisors is an integer number (4483335).

Almost surely, 2^23124521 is an apocalyptic number.

It is an amenable number.

23124521 is a deficient number, since it is larger than the sum of its proper divisors (3775489).

23124521 is an equidigital number, since it uses as much as digits as its factorization.

23124521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471943 (or 471936 counting only the distinct ones).

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

The square root of 23124521 is about 4808.7962111115. The cubic root of 23124521 is about 284.8989936517.

Adding to 23124521 its reverse (12542132), we get a palindrome (35666653).

The spelling of 23124521 in words is "twenty-three million, one hundred twenty-four thousand, five hundred twenty-one".