513040044 has 96 divisors (see below), whose sum is σ = 1359267840. Its totient is φ = 149184000.

The previous prime is 513040043. The next prime is 513040097. The reversal of 513040044 is 440040315.

It is a self number, because there is not a number n which added to its sum of digits gives 513040044.

It is not an unprimeable number, because it can be changed into a prime (513040043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853344 + ... + 853944.

It is an arithmetic number, because the mean of its divisors is an integer number (14159040).

Almost surely, 2^513040044 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 513040044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679633920).

513040044 is an abundant number, since it is smaller than the sum of its proper divisors (846227796).

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

513040044 is a wasteful number, since it uses less digits than its factorization.

513040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 513040044 is about 22650.3872814572. The cubic root of 513040044 is about 800.5413232122.

Adding to 513040044 its reverse (440040315), we get a palindrome (953080359).

The spelling of 513040044 in words is "five hundred thirteen million, forty thousand, forty-four".