525449 has 4 divisors (see below), whose sum is σ = 530964. Its totient is φ = 519936.

The previous prime is 525439. The next prime is 525457. The reversal of 525449 is 944525.

It is a happy number.

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 126025 + 399424 = 355^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 525449 - 2⁴ = 525433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612 + ... + 2805.

It is an arithmetic number, because the mean of its divisors is an integer number (132741).

2⁵²⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

525449 is a deficient number, since it is larger than the sum of its proper divisors (5515).

525449 is an equidigital number, since it uses as much as digits as its factorization.

525449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514.

The product of its digits is 7200, while the sum is 29.

The square root of 525449 is about 724.8786105273. The cubic root of 525449 is about 80.6944235089.

The spelling of 525449 in words is "five hundred twenty-five thousand, four hundred forty-nine".