517621413 has 8 divisors (see below), whose sum is σ = 690724768. Its totient is φ = 344799504.

The previous prime is 517621369. The next prime is 517621459. The reversal of 517621413 is 314126715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 517621413 - 2¹⁷ = 517490341 is a prime.

It is a super-2 number, since 2×517621413² = 535863854392233138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517621213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66031 + ... + 73452.

It is an arithmetic number, because the mean of its divisors is an integer number (86340596).

Almost surely, 2^517621413 is an apocalyptic number.

It is an amenable number.

517621413 is a deficient number, since it is larger than the sum of its proper divisors (173103355).

517621413 is a wasteful number, since it uses less digits than its factorization.

517621413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140723.

The product of its digits is 5040, while the sum is 30.

The square root of 517621413 is about 22751.2947543651. The cubic root of 517621413 is about 802.9171689976.

The spelling of 517621413 in words is "five hundred seventeen million, six hundred twenty-one thousand, four hundred thirteen".