23552021 has 8 divisors (see below), whose sum is σ = 25119360. Its totient is φ = 22004928.

The previous prime is 23551993. The next prime is 23552051. The reversal of 23552021 is 12025532.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23552021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23551984 and 23552002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23552051) 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 7 ways as a sum of consecutive naturals, for example, 2621 + ... + 7346.

It is an arithmetic number, because the mean of its divisors is an integer number (3139920).

Almost surely, 2^23552021 is an apocalyptic number.

It is an amenable number.

23552021 is a deficient number, since it is larger than the sum of its proper divisors (1567339).

23552021 is a wasteful number, since it uses less digits than its factorization.

23552021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10123.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23552021 is about 4853.0424477847. The cubic root of 23552021 is about 286.6439148760.

Adding to 23552021 its reverse (12025532), we get a palindrome (35577553).

The spelling of 23552021 in words is "twenty-three million, five hundred fifty-two thousand, twenty-one".