520053240 has 64 divisors (see below), whose sum is σ = 1783042560. Its totient is φ = 118869120.

The previous prime is 520053229. The next prime is 520053251. The reversal of 520053240 is 42350025.

It is an interprime number because it is at equal distance from previous prime (520053229) and next prime (520053251).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308716 + ... + 310395.

It is an arithmetic number, because the mean of its divisors is an integer number (27860040).

Almost surely, 2^520053240 is an apocalyptic number.

It is an amenable number.

520053240 is an abundant number, since it is smaller than the sum of its proper divisors (1262989320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520053240 is a wasteful number, since it uses less digits than its factorization.

520053240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619132 (or 619128 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 520053240 is about 22804.6758363280. The cubic root of 520053240 is about 804.1725948119.

The spelling of 520053240 in words is "five hundred twenty million, fifty-three thousand, two hundred forty".