23775457 has 2 divisors, whose sum is σ = 23775458. Its totient is φ = 23775456.

The previous prime is 23775413. The next prime is 23775461. The reversal of 23775457 is 75457732.

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., 23775376 + 81 = 4876^2 + 9^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23775457 is a prime.

It is not a weakly prime, because it can be changed into another prime (23775487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11887728 + 11887729.

It is an arithmetic number, because the mean of its divisors is an integer number (11887729).

Almost surely, 2^23775457 is an apocalyptic number.

It is an amenable number.

23775457 is a deficient number, since it is larger than the sum of its proper divisors (1).

23775457 is an equidigital number, since it uses as much as digits as its factorization.

23775457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205800, while the sum is 40.

The square root of 23775457 is about 4876.0083059814. The cubic root of 23775457 is about 287.5475187996.

The spelling of 23775457 in words is "twenty-three million, seven hundred seventy-five thousand, four hundred fifty-seven".