520453139 has 8 divisors (see below), whose sum is σ = 534280320. Its totient is φ = 506680000.

The previous prime is 520453133. The next prime is 520453189. The reversal of 520453139 is 931354025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520453139 - 2¹² = 520449043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520453133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6389 + ... + 32889.

It is an arithmetic number, because the mean of its divisors is an integer number (66785040).

Almost surely, 2^520453139 is an apocalyptic number.

520453139 is a deficient number, since it is larger than the sum of its proper divisors (13827181).

520453139 is a wasteful number, since it uses less digits than its factorization.

520453139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27021.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 520453139 is about 22813.4420682193. The cubic root of 520453139 is about 804.3786669329.

The spelling of 520453139 in words is "five hundred twenty million, four hundred fifty-three thousand, one hundred thirty-nine".