23507857 has 2 divisors, whose sum is σ = 23507858. Its totient is φ = 23507856.

The previous prime is 23507843. The next prime is 23507873. The reversal of 23507857 is 75870532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 3651921 = 4456^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 23507857 - 2¹¹ = 23505809 is a prime.

It is not a weakly prime, because it can be changed into another prime (23507657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11753928 + 11753929.

It is an arithmetic number, because the mean of its divisors is an integer number (11753929).

Almost surely, 2^23507857 is an apocalyptic number.

It is an amenable number.

23507857 is a deficient number, since it is larger than the sum of its proper divisors (1).

23507857 is an equidigital number, since it uses as much as digits as its factorization.

23507857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 23507857 is about 4848.4901773645. The cubic root of 23507857 is about 286.4646342542.

The spelling of 23507857 in words is "twenty-three million, five hundred seven thousand, eight hundred fifty-seven".