525913 has 2 divisors, whose sum is σ = 525914. Its totient is φ = 525912.

The previous prime is 525893. The next prime is 525923. The reversal of 525913 is 319525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501264 + 24649 = 708^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 525913 - 2¹³ = 517721 is a prime.

It is an Ulam number.

525913 is a lucky number.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (525923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262956 + 262957.

It is an arithmetic number, because the mean of its divisors is an integer number (262957).

2⁵²⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

525913 is a deficient number, since it is larger than the sum of its proper divisors (1).

525913 is an equidigital number, since it uses as much as digits as its factorization.

525913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 525913 is about 725.1985934901. The cubic root of 525913 is about 80.7181690400.

The spelling of 525913 in words is "five hundred twenty-five thousand, nine hundred thirteen".