525731 has 2 divisors, whose sum is σ = 525732. Its totient is φ = 525730.

The previous prime is 525727. The next prime is 525739. The reversal of 525731 is 137525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525731 - 2² = 525727 is a prime.

It is a super-2 number, since 2×525731² = 552786168722, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 525697 and 525706.

It is not a weakly prime, because it can be changed into another prime (525739) 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, 262865 + 262866.

It is an arithmetic number, because the mean of its divisors is an integer number (262866).

2⁵²⁵⁷³¹ is an apocalyptic number.

525731 is a deficient number, since it is larger than the sum of its proper divisors (1).

525731 is an equidigital number, since it uses as much as digits as its factorization.

525731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 23.

The square root of 525731 is about 725.0730997631. The cubic root of 525731 is about 80.7088567255.

The spelling of 525731 in words is "five hundred twenty-five thousand, seven hundred thirty-one".