525155 has 4 divisors (see below), whose sum is σ = 630192. Its totient is φ = 420120.

The previous prime is 525143. The next prime is 525157. The reversal of 525155 is 551525.

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

It is not a de Polignac number, because 525155 - 2⁸ = 524899 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 525155.

It is not an unprimeable number, because it can be changed into a prime (525157) 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, 52511 + ... + 52520.

It is an arithmetic number, because the mean of its divisors is an integer number (157548).

2⁵²⁵¹⁵⁵ is an apocalyptic number.

525155 is a deficient number, since it is larger than the sum of its proper divisors (105037).

525155 is a wasteful number, since it uses less digits than its factorization.

525155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105036.

The product of its digits is 1250, while the sum is 23.

The square root of 525155 is about 724.6757895777. The cubic root of 525155 is about 80.6793706134.

The spelling of 525155 in words is "five hundred twenty-five thousand, one hundred fifty-five".