525739 has 2 divisors, whose sum is σ = 525740. Its totient is φ = 525738.

The previous prime is 525731. The next prime is 525769. The reversal of 525739 is 937525.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525739 - 2³ = 525731 is a prime.

It is a super-2 number, since 2×525739² = 552802992242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁴ + 2¹⁴ + 7 + 5⁸ + 3¹⁰ + 9⁵ .

525739 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 525739.

It is not a weakly prime, because it can be changed into another prime (525731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262869 + 262870.

It is an arithmetic number, because the mean of its divisors is an integer number (262870).

2⁵²⁵⁷³⁹ is an apocalyptic number.

525739 is a deficient number, since it is larger than the sum of its proper divisors (1).

525739 is an equidigital number, since it uses as much as digits as its factorization.

525739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 31.

The square root of 525739 is about 725.0786164272. The cubic root of 525739 is about 80.7092661032.

The spelling of 525739 in words is "five hundred twenty-five thousand, seven hundred thirty-nine".