23905457 has 2 divisors, whose sum is σ = 23905458. Its totient is φ = 23905456.

The previous prime is 23905429. The next prime is 23905471. The reversal of 23905457 is 75450932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23902321 + 3136 = 4889^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 23905457 - 2⁸ = 23905201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23905157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11952728 + 11952729.

It is an arithmetic number, because the mean of its divisors is an integer number (11952729).

Almost surely, 2^23905457 is an apocalyptic number.

It is an amenable number.

23905457 is a deficient number, since it is larger than the sum of its proper divisors (1).

23905457 is an equidigital number, since it uses as much as digits as its factorization.

23905457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 23905457 is about 4889.3207094647. The cubic root of 23905457 is about 288.0706528369.

The spelling of 23905457 in words is "twenty-three million, nine hundred five thousand, four hundred fifty-seven".