513161217 has 16 divisors (see below), whose sum is σ = 763277760. Its totient is φ = 340740000.

The previous prime is 513161213. The next prime is 513161221. The reversal of 513161217 is 712161315.

513161217 is a `hidden beast` number, since 5 + 1 + 31 + 612 + 17 = 666.

It is an interprime number because it is at equal distance from previous prime (513161213) and next prime (513161221).

It is not a de Polignac number, because 513161217 - 2² = 513161213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (513161213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31084 + ... + 44637.

It is an arithmetic number, because the mean of its divisors is an integer number (47704860).

Almost surely, 2^513161217 is an apocalyptic number.

It is an amenable number.

513161217 is a deficient number, since it is larger than the sum of its proper divisors (250116543).

513161217 is a wasteful number, since it uses less digits than its factorization.

513161217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75981 (or 75975 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 513161217 is about 22653.0619784611. The cubic root of 513161217 is about 800.6043438665.

The spelling of 513161217 in words is "five hundred thirteen million, one hundred sixty-one thousand, two hundred seventeen".