23552521 has 2 divisors, whose sum is σ = 23552522. Its totient is φ = 23552520.

The previous prime is 23552471. The next prime is 23552561. The reversal of 23552521 is 12525532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20793600 + 2758921 = 4560^2 + 1661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23552521 is a prime.

It is equal to p_1480822 and since 23552521 and 1480822 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23552561) 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 as a sum of consecutive naturals, namely, 11776260 + 11776261.

It is an arithmetic number, because the mean of its divisors is an integer number (11776261).

Almost surely, 2^23552521 is an apocalyptic number.

It is an amenable number.

23552521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23552521 is an equidigital number, since it uses as much as digits as its factorization.

23552521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 25.

The square root of 23552521 is about 4853.0939615878. The cubic root of 23552521 is about 286.6459433069.

The spelling of 23552521 in words is "twenty-three million, five hundred fifty-two thousand, five hundred twenty-one".