520264381 has 8 divisors (see below), whose sum is σ = 640325504. Its totient is φ = 411637680.

The previous prime is 520264369. The next prime is 520264391. The reversal of 520264381 is 183462025.

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 520264381 - 2¹³ = 520256189 is a prime.

It is a super-2 number, since 2×520264381² = 541350052274626322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520264331) 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, 2858505 + ... + 2858686.

It is an arithmetic number, because the mean of its divisors is an integer number (80040688).

Almost surely, 2^520264381 is an apocalyptic number.

It is an amenable number.

520264381 is a deficient number, since it is larger than the sum of its proper divisors (120061123).

520264381 is a wasteful number, since it uses less digits than its factorization.

520264381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717211.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 520264381 is about 22809.3047022482. The cubic root of 520264381 is about 804.2814111274.

The spelling of 520264381 in words is "five hundred twenty million, two hundred sixty-four thousand, three hundred eighty-one".