513215651 has 12 divisors (see below), whose sum is σ = 561477672. Its totient is φ = 468838656.

The previous prime is 513215617. The next prime is 513215657. The reversal of 513215651 is 156512315.

It is not a de Polignac number, because 513215651 - 2⁶ = 513215587 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 740 + ... + 32046.

It is an arithmetic number, because the mean of its divisors is an integer number (46789806).

Almost surely, 2^513215651 is an apocalyptic number.

513215651 is a deficient number, since it is larger than the sum of its proper divisors (48262021).

513215651 is a wasteful number, since it uses less digits than its factorization.

513215651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31430 (or 31417 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 513215651 is about 22654.2634177322. The cubic root of 513215651 is about 800.6326511213.

Adding to 513215651 its reverse (156512315), we get a palindrome (669727966).

The spelling of 513215651 in words is "five hundred thirteen million, two hundred fifteen thousand, six hundred fifty-one".