525550 has 24 divisors (see below), whose sum is σ = 1022256. Its totient is φ = 200640.

The previous prime is 525541. The next prime is 525571. The reversal of 525550 is 55525.

525550 = 17² + 18² + ... + 116².

525550 is nontrivially palindromic in base 7.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (42594).

2⁵²⁵⁵⁵⁰ is an apocalyptic number.

525550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

525550 is a deficient number, since it is larger than the sum of its proper divisors (496706).

525550 is a wasteful number, since it uses less digits than its factorization.

525550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 525550 is about 724.9482740168. The cubic root of 525550 is about 80.6995934458.

The spelling of 525550 in words is "five hundred twenty-five thousand, five hundred fifty".