252758437 has 2 divisors, whose sum is σ = 252758438. Its totient is φ = 252758436.

The previous prime is 252758413. The next prime is 252758483. The reversal of 252758437 is 734857252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252460321 + 298116 = 15889^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 252758437 - 2¹⁹ = 252234149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252758393 and 252758402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252758497) 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, 126379218 + 126379219.

It is an arithmetic number, because the mean of its divisors is an integer number (126379219).

Almost surely, 2^252758437 is an apocalyptic number.

It is an amenable number.

252758437 is a deficient number, since it is larger than the sum of its proper divisors (1).

252758437 is an equidigital number, since it uses as much as digits as its factorization.

252758437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 43.

The square root of 252758437 is about 15898.3784393252. The cubic root of 252758437 is about 632.2689971784.

The spelling of 252758437 in words is "two hundred fifty-two million, seven hundred fifty-eight thousand, four hundred thirty-seven".