525611 has 4 divisors (see below), whose sum is σ = 528192. Its totient is φ = 523032.

The previous prime is 525607. The next prime is 525641. The reversal of 525611 is 116525.

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

It is a cyclic number.

It is not a de Polignac number, because 525611 - 2² = 525607 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 525611.

It is not an unprimeable number, because it can be changed into a prime (525641) 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 in 3 ways as a sum of consecutive naturals, for example, 956 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (132048).

2⁵²⁵⁶¹¹ is an apocalyptic number.

525611 is a deficient number, since it is larger than the sum of its proper divisors (2581).

525611 is a wasteful number, since it uses less digits than its factorization.

525611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580.

The product of its digits is 300, while the sum is 20.

The square root of 525611 is about 724.9903447633. The cubic root of 525611 is about 80.7027155622.

The spelling of 525611 in words is "five hundred twenty-five thousand, six hundred eleven".