23195857 has 2 divisors, whose sum is σ = 23195858. Its totient is φ = 23195856.

The previous prime is 23195839. The next prime is 23195897. The reversal of 23195857 is 75859132.

It is an a-pointer prime, because the next prime (23195897) can be obtained adding 23195857 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15992001 + 7203856 = 3999^2 + 2684^2 .

It is a cyclic number.

It is not a de Polignac number, because 23195857 - 2⁷ = 23195729 is a prime.

It is not a weakly prime, because it can be changed into another prime (23195807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11597928 + 11597929.

It is an arithmetic number, because the mean of its divisors is an integer number (11597929).

Almost surely, 2^23195857 is an apocalyptic number.

It is an amenable number.

23195857 is a deficient number, since it is larger than the sum of its proper divisors (1).

23195857 is an equidigital number, since it uses as much as digits as its factorization.

23195857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 23195857 is about 4816.2077405361. The cubic root of 23195857 is about 285.1916511283.

The spelling of 23195857 in words is "twenty-three million, one hundred ninety-five thousand, eight hundred fifty-seven".