513033440 has 48 divisors (see below), whose sum is σ = 1275840720. Its totient is φ = 194411520.

The previous prime is 513033431. The next prime is 513033457. The reversal of 513033440 is 44330315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81341 + ... + 87420.

It is an arithmetic number, because the mean of its divisors is an integer number (26580015).

Almost surely, 2^513033440 is an apocalyptic number.

It is an amenable number.

513033440 is an abundant number, since it is smaller than the sum of its proper divisors (762807280).

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

513033440 is a wasteful number, since it uses less digits than its factorization.

513033440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168795 (or 168787 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 513033440 is about 22650.2414998163. The cubic root of 513033440 is about 800.5378882642.

Adding to 513033440 its reverse (44330315), we get a palindrome (557363755).

The spelling of 513033440 in words is "five hundred thirteen million, thirty-three thousand, four hundred forty".