517445394 has 16 divisors (see below), whose sum is σ = 1035606432. Its totient is φ = 172362528.

The previous prime is 517445393. The next prime is 517445443. The reversal of 517445394 is 493544715.

It is not an unprimeable number, because it can be changed into a prime (517445393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20179 + ... + 37974.

It is an arithmetic number, because the mean of its divisors is an integer number (64725402).

Almost surely, 2^517445394 is an apocalyptic number.

517445394 is an abundant number, since it is smaller than the sum of its proper divisors (518161038).

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

517445394 is a wasteful number, since it uses less digits than its factorization.

517445394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59641.

The product of its digits is 302400, while the sum is 42.

The square root of 517445394 is about 22747.4260961543. The cubic root of 517445394 is about 802.8261470676.

The spelling of 517445394 in words is "five hundred seventeen million, four hundred forty-five thousand, three hundred ninety-four".