517420054 has 4 divisors (see below), whose sum is σ = 776130084. Its totient is φ = 258710026.

The previous prime is 517420051. The next prime is 517420063. The reversal of 517420054 is 450024715.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517420051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129355012 + ... + 129355015.

It is an arithmetic number, because the mean of its divisors is an integer number (194032521).

Almost surely, 2^517420054 is an apocalyptic number.

517420054 is a deficient number, since it is larger than the sum of its proper divisors (258710030).

517420054 is a wasteful number, since it uses less digits than its factorization.

517420054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258710029.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 517420054 is about 22746.8691032414. The cubic root of 517420054 is about 802.8130416934.

Adding to 517420054 its reverse (450024715), we get a palindrome (967444769).

The spelling of 517420054 in words is "five hundred seventeen million, four hundred twenty thousand, fifty-four".