23730557 has 2 divisors, whose sum is σ = 23730558. Its totient is φ = 23730556.

The previous prime is 23730541. The next prime is 23730599. The reversal of 23730557 is 75503732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15952036 + 7778521 = 3994^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 23730557 - 2⁴ = 23730541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23730757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11865278 + 11865279.

It is an arithmetic number, because the mean of its divisors is an integer number (11865279).

Almost surely, 2^23730557 is an apocalyptic number.

It is an amenable number.

23730557 is a deficient number, since it is larger than the sum of its proper divisors (1).

23730557 is an equidigital number, since it uses as much as digits as its factorization.

23730557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22050, while the sum is 32.

The square root of 23730557 is about 4871.4019542633. The cubic root of 23730557 is about 287.3663933707.

The spelling of 23730557 in words is "twenty-three million, seven hundred thirty thousand, five hundred fifty-seven".