520231253 has 4 divisors (see below), whose sum is σ = 520589280. Its totient is φ = 519873228.

The previous prime is 520231249. The next prime is 520231277. The reversal of 520231253 is 352132025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520231253 - 2² = 520231249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520230253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176825 + ... + 179742.

It is an arithmetic number, because the mean of its divisors is an integer number (130147320).

Almost surely, 2^520231253 is an apocalyptic number.

It is an amenable number.

520231253 is a deficient number, since it is larger than the sum of its proper divisors (358027).

520231253 is a wasteful number, since it uses less digits than its factorization.

520231253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358026.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 520231253 is about 22808.5784958204. The cubic root of 520231253 is about 804.2643398068.

Adding to 520231253 its reverse (352132025), we get a palindrome (872363278).

The spelling of 520231253 in words is "five hundred twenty million, two hundred thirty-one thousand, two hundred fifty-three".