520159249 has 3 divisors (see below), whose sum is σ = 520182057. Its totient is φ = 520136442.

The previous prime is 520159223. The next prime is 520159253. The reversal of 520159249 is 942951025.

The square root of 520159249 is 22807.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 520159249 - 2¹⁷ = 520028177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520151249) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11404 + ... + 34210.

It is an arithmetic number, because the mean of its divisors is an integer number (173394019).

Almost surely, 2^520159249 is an apocalyptic number.

520159249 is the 22807-th square number.

520159249 is the 11404-th centered octagonal number.

It is an amenable number.

520159249 is a deficient number, since it is larger than the sum of its proper divisors (22808).

520159249 is an frugal number, since it uses more digits than its factorization.

520159249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45614 (or 22807 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The cubic root of 520159249 is about 804.2272326414.

Multiplying 520159249 by its product of nonzero digits (32400), we get a square (16853159667600 = 4105260²).

The spelling of 520159249 in words is "five hundred twenty million, one hundred fifty-nine thousand, two hundred forty-nine".