517211394 has 32 divisors (see below), whose sum is σ = 1184184960. Its totient is φ = 147526272.

The previous prime is 517211393. The next prime is 517211399. The reversal of 517211394 is 493112715.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (517211393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15702 + ... + 35790.

It is an arithmetic number, because the mean of its divisors is an integer number (37005780).

Almost surely, 2^517211394 is an apocalyptic number.

517211394 is an abundant number, since it is smaller than the sum of its proper divisors (666973566).

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

517211394 is a wasteful number, since it uses less digits than its factorization.

517211394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20714.

The product of its digits is 7560, while the sum is 33.

The square root of 517211394 is about 22742.2820754646. The cubic root of 517211394 is about 802.7051103708.

The spelling of 517211394 in words is "five hundred seventeen million, two hundred eleven thousand, three hundred ninety-four".