523145237 has 2 divisors, whose sum is σ = 523145238. Its totient is φ = 523145236.

The previous prime is 523145219. The next prime is 523145251. The reversal of 523145237 is 732541325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518655076 + 4490161 = 22774^2 + 2119^2 .

It is a cyclic number.

It is not a de Polignac number, because 523145237 - 2⁸ = 523144981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523142237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261572618 + 261572619.

It is an arithmetic number, because the mean of its divisors is an integer number (261572619).

Almost surely, 2^523145237 is an apocalyptic number.

It is an amenable number.

523145237 is a deficient number, since it is larger than the sum of its proper divisors (1).

523145237 is an equidigital number, since it uses as much as digits as its factorization.

523145237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 32.

The square root of 523145237 is about 22872.3684169349. The cubic root of 523145237 is about 805.7631932436.

The spelling of 523145237 in words is "five hundred twenty-three million, one hundred forty-five thousand, two hundred thirty-seven".