513215652 has 96 divisors (see below), whose sum is σ = 1339027200. Its totient is φ = 152154112.

The previous prime is 513215617. The next prime is 513215657. The reversal of 513215652 is 256512315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (513215657) 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, 416974 + ... + 418202.

It is an arithmetic number, because the mean of its divisors is an integer number (13948200).

Almost surely, 2^513215652 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 513215652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669513600).

513215652 is an abundant number, since it is smaller than the sum of its proper divisors (825811548).

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

513215652 is a wasteful number, since it uses less digits than its factorization.

513215652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1363 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 513215652 is about 22654.2634398031. The cubic root of 513215652 is about 800.6326516413.

Adding to 513215652 its reverse (256512315), we get a palindrome (769727967).

The spelling of 513215652 in words is "five hundred thirteen million, two hundred fifteen thousand, six hundred fifty-two".