515612272 has 80 divisors (see below), whose sum is σ = 1214208000. Its totient is φ = 207187200.

The previous prime is 515612263. The next prime is 515612287. The reversal of 515612272 is 272216515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213729 + ... + 216127.

It is an arithmetic number, because the mean of its divisors is an integer number (15177600).

Almost surely, 2^515612272 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 515612272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607104000).

515612272 is an abundant number, since it is smaller than the sum of its proper divisors (698595728).

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

515612272 is a wasteful number, since it uses less digits than its factorization.

515612272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2528 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 515612272 is about 22707.0973926656. The cubic root of 515612272 is about 801.8769843846.

Adding to 515612272 its reverse (272216515), we get a palindrome (787828787).

The spelling of 515612272 in words is "five hundred fifteen million, six hundred twelve thousand, two hundred seventy-two".