515172213 has 24 divisors (see below), whose sum is σ = 785532800. Its totient is φ = 324445824.

The previous prime is 515172181. The next prime is 515172223. The reversal of 515172213 is 312271515.

It is not a de Polignac number, because 515172213 - 2⁵ = 515172181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515172223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58653 + ... + 66861.

Almost surely, 2^515172213 is an apocalyptic number.

It is an amenable number.

515172213 is a deficient number, since it is larger than the sum of its proper divisors (270360587).

515172213 is a wasteful number, since it uses less digits than its factorization.

515172213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8601 (or 8598 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 515172213 is about 22697.4054244092. The cubic root of 515172213 is about 801.6487937851.

The spelling of 515172213 in words is "five hundred fifteen million, one hundred seventy-two thousand, two hundred thirteen".