525617 has 4 divisors (see below), whose sum is σ = 527460. Its totient is φ = 523776.

The previous prime is 525607. The next prime is 525641. The reversal of 525617 is 716525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160801 + 364816 = 401^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 525617 - 2⁸ = 525361 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525617.

It is not an unprimeable number, because it can be changed into a prime (525607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392 + ... + 1097.

It is an arithmetic number, because the mean of its divisors is an integer number (131865).

2⁵²⁵⁶¹⁷ is an apocalyptic number.

It is an amenable number.

525617 is a deficient number, since it is larger than the sum of its proper divisors (1843).

525617 is a wasteful number, since it uses less digits than its factorization.

525617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842.

The product of its digits is 2100, while the sum is 26.

The square root of 525617 is about 724.9944827376. The cubic root of 525617 is about 80.7030226425.

The spelling of 525617 in words is "five hundred twenty-five thousand, six hundred seventeen".