23407157 has 2 divisors, whose sum is σ = 23407158. Its totient is φ = 23407156.

The previous prime is 23407151. The next prime is 23407171. The reversal of 23407157 is 75170432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23367556 + 39601 = 4834^2 + 199^2 .

It is a cyclic number.

It is not a de Polignac number, because 23407157 - 2¹⁶ = 23341621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23407151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11703578 + 11703579.

It is an arithmetic number, because the mean of its divisors is an integer number (11703579).

Almost surely, 2^23407157 is an apocalyptic number.

It is an amenable number.

23407157 is a deficient number, since it is larger than the sum of its proper divisors (1).

23407157 is an equidigital number, since it uses as much as digits as its factorization.

23407157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 23407157 is about 4838.0943562523. The cubic root of 23407157 is about 286.0550084095.

Adding to 23407157 its reverse (75170432), we get a palindrome (98577589).

The spelling of 23407157 in words is "twenty-three million, four hundred seven thousand, one hundred fifty-seven".