515031216 has 80 divisors (see below), whose sum is σ = 1532306688. Its totient is φ = 146016000.

The previous prime is 515031199. The next prime is 515031229. The reversal of 515031216 is 612130515.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38166 + ... + 49866.

Almost surely, 2^515031216 is an apocalyptic number.

515031216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515031216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766153344).

515031216 is an abundant number, since it is smaller than the sum of its proper divisors (1017275472).

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

515031216 is a wasteful number, since it uses less digits than its factorization.

515031216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11850 (or 11844 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 515031216 is about 22694.2991960536. The cubic root of 515031216 is about 801.5756529432.

The spelling of 515031216 in words is "five hundred fifteen million, thirty-one thousand, two hundred sixteen".