525978 has 12 divisors (see below), whose sum is σ = 1139658. Its totient is φ = 175320.

The previous prime is 525961. The next prime is 525979. The reversal of 525978 is 879525.

It can be written as a sum of positive squares in only one way, i.e., 522729 + 3249 = 723^2 + 57^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525979) by changing a digit.

525978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 14593 + ... + 14628.

2⁵²⁵⁹⁷⁸ is an apocalyptic number.

525978 is an abundant number, since it is smaller than the sum of its proper divisors (613680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525978 is a wasteful number, since it uses less digits than its factorization.

525978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29229 (or 29226 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 525978 is about 725.2434074157. The cubic root of 525978 is about 80.7214943459.

The spelling of 525978 in words is "five hundred twenty-five thousand, nine hundred seventy-eight".