525135557 has 2 divisors, whose sum is σ = 525135558. Its totient is φ = 525135556.

The previous prime is 525135551. The next prime is 525135571. The reversal of 525135557 is 755531525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523768996 + 1366561 = 22886^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 525135557 - 2⁶ = 525135493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525135557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525135551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262567778 + 262567779.

It is an arithmetic number, because the mean of its divisors is an integer number (262567779).

Almost surely, 2^525135557 is an apocalyptic number.

It is an amenable number.

525135557 is a deficient number, since it is larger than the sum of its proper divisors (1).

525135557 is an equidigital number, since it uses as much as digits as its factorization.

525135557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131250, while the sum is 38.

The square root of 525135557 is about 22915.8363801106. The cubic root of 525135557 is about 806.7837492744.

The spelling of 525135557 in words is "five hundred twenty-five million, one hundred thirty-five thousand, five hundred fifty-seven".