511940520 has 256 divisors, whose sum is σ = 2100672000. Its totient is φ = 107993088.

The previous prime is 511940453. The next prime is 511940543. The reversal of 511940520 is 25049115.

511940520 is a `hidden beast` number, since 51 + 1 + 94 + 0 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95676 + ... + 100884.

It is an arithmetic number, because the mean of its divisors is an integer number (8205750).

Almost surely, 2^511940520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511940520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050336000).

511940520 is an abundant number, since it is smaller than the sum of its proper divisors (1588731480).

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

511940520 is a wasteful number, since it uses less digits than its factorization.

511940520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249 (or 5239 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 511940520 is about 22626.1026250656. The cubic root of 511940520 is about 799.9690196336.

Adding to 511940520 its reverse (25049115), we get a palindrome (536989635).

The spelling of 511940520 in words is "five hundred eleven million, nine hundred forty thousand, five hundred twenty".