23375521 has 8 divisors (see below), whose sum is σ = 26268480. Its totient is φ = 20638992.

The previous prime is 23375507. The next prime is 23375557. The reversal of 23375521 is 12557332.

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

It is a cyclic number.

It is not a de Polignac number, because 23375521 - 2⁷ = 23375393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23375521.

It is not an unprimeable number, because it can be changed into a prime (23375501) 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, 38791 + ... + 39388.

It is an arithmetic number, because the mean of its divisors is an integer number (3283560).

Almost surely, 2^23375521 is an apocalyptic number.

It is an amenable number.

23375521 is a deficient number, since it is larger than the sum of its proper divisors (2892959).

23375521 is a wasteful number, since it uses less digits than its factorization.

23375521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78215.

The product of its digits is 6300, while the sum is 28.

The square root of 23375521 is about 4834.8237816905. The cubic root of 23375521 is about 285.9260775255.

The spelling of 23375521 in words is "twenty-three million, three hundred seventy-five thousand, five hundred twenty-one".