525537121 has 2 divisors, whose sum is σ = 525537122. Its totient is φ = 525537120.

The previous prime is 525537119. The next prime is 525537137. The reversal of 525537121 is 121735525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471367521 + 54169600 = 21711^2 + 7360^2 .

It is a cyclic number.

It is not a de Polignac number, because 525537121 - 2¹ = 525537119 is a prime.

Together with 525537119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (525537161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262768560 + 262768561.

It is an arithmetic number, because the mean of its divisors is an integer number (262768561).

Almost surely, 2^525537121 is an apocalyptic number.

It is an amenable number.

525537121 is a deficient number, since it is larger than the sum of its proper divisors (1).

525537121 is an equidigital number, since it uses as much as digits as its factorization.

525537121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10500, while the sum is 31.

The square root of 525537121 is about 22924.5964195665. The cubic root of 525537121 is about 806.9893423893.

The spelling of 525537121 in words is "five hundred twenty-five million, five hundred thirty-seven thousand, one hundred twenty-one".