520381249 has 16 divisors (see below), whose sum is σ = 544939200. Its totient is φ = 496310976.

The previous prime is 520381241. The next prime is 520381261. The reversal of 520381249 is 942183025.

It is a cyclic number.

It is not a de Polignac number, because 520381249 - 2³ = 520381241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520381241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1337547 + ... + 1337935.

It is an arithmetic number, because the mean of its divisors is an integer number (34058700).

Almost surely, 2^520381249 is an apocalyptic number.

It is an amenable number.

520381249 is a deficient number, since it is larger than the sum of its proper divisors (24557951).

520381249 is a wasteful number, since it uses less digits than its factorization.

520381249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 520381249 is about 22811.8664076397. The cubic root of 520381249 is about 804.3416290514.

The spelling of 520381249 in words is "five hundred twenty million, three hundred eighty-one thousand, two hundred forty-nine".