252145687 has 2 divisors, whose sum is σ = 252145688. Its totient is φ = 252145686.

The previous prime is 252145631. The next prime is 252145703. The reversal of 252145687 is 786541252.

252145687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252145687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252142687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126072843 + 126072844.

It is an arithmetic number, because the mean of its divisors is an integer number (126072844).

Almost surely, 2^252145687 is an apocalyptic number.

252145687 is a deficient number, since it is larger than the sum of its proper divisors (1).

252145687 is an equidigital number, since it uses as much as digits as its factorization.

252145687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 252145687 is about 15879.0959125512. The cubic root of 252145687 is about 631.7576574119.

The spelling of 252145687 in words is "two hundred fifty-two million, one hundred forty-five thousand, six hundred eighty-seven".