515399472 has 240 divisors, whose sum is σ = 1838453760. Its totient is φ = 131217408.

The previous prime is 515399461. The next prime is 515399473. The reversal of 515399472 is 274993515.

It is a happy number.

515399472 is a `hidden beast` number, since 515 + 3 + 99 + 47 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515399473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 324793 + ... + 326375.

It is an arithmetic number, because the mean of its divisors is an integer number (7660224).

Almost surely, 2^515399472 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 515399472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919226880).

515399472 is an abundant number, since it is smaller than the sum of its proper divisors (1323054288).

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

515399472 is a wasteful number, since it uses less digits than its factorization.

515399472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1631 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 515399472 is about 22702.4111494793. The cubic root of 515399472 is about 801.7666541280.

The spelling of 515399472 in words is "five hundred fifteen million, three hundred ninety-nine thousand, four hundred seventy-two".