23772559 has 2 divisors, whose sum is σ = 23772560. Its totient is φ = 23772558.

The previous prime is 23772557. The next prime is 23772571. The reversal of 23772559 is 95527732.

23772559 = 1988² + 1989² + ... + 1993².

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23772559 - 2¹ = 23772557 is a prime.

It is a super-2 number, since 2×23772559² = 1130269122816962, which contains 22 as substring.

Together with 23772557, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23772557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11886279 + 11886280.

It is an arithmetic number, because the mean of its divisors is an integer number (11886280).

Almost surely, 2^23772559 is an apocalyptic number.

23772559 is a deficient number, since it is larger than the sum of its proper divisors (1).

23772559 is an equidigital number, since it uses as much as digits as its factorization.

23772559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 40.

The square root of 23772559 is about 4875.7111276203. The cubic root of 23772559 is about 287.5358352307.

The spelling of 23772559 in words is "twenty-three million, seven hundred seventy-two thousand, five hundred fifty-nine".