525506537 has 2 divisors, whose sum is σ = 525506538. Its totient is φ = 525506536.

The previous prime is 525506491. The next prime is 525506561. The reversal of 525506537 is 735605525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467381161 + 58125376 = 21619^2 + 7624^2 .

It is a cyclic number.

It is not a de Polignac number, because 525506537 - 2⁶ = 525506473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525506537.

It is not a weakly prime, because it can be changed into another prime (525506837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262753268 + 262753269.

It is an arithmetic number, because the mean of its divisors is an integer number (262753269).

Almost surely, 2^525506537 is an apocalyptic number.

It is an amenable number.

525506537 is a deficient number, since it is larger than the sum of its proper divisors (1).

525506537 is an equidigital number, since it uses as much as digits as its factorization.

525506537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157500, while the sum is 38.

The square root of 525506537 is about 22923.9293534071. The cubic root of 525506537 is about 806.9736876494.

The spelling of 525506537 in words is "five hundred twenty-five million, five hundred six thousand, five hundred thirty-seven".