517367421 has 12 divisors (see below), whose sum is σ = 748874880. Its totient is φ = 344188680.

The previous prime is 517367407. The next prime is 517367423. The reversal of 517367421 is 124763715.

It is a happy number.

517367421 is a `hidden beast` number, since 5 + 173 + 67 + 421 = 666.

It is not a de Polignac number, because 517367421 - 2⁷ = 517367293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517367423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55695 + ... + 64316.

It is an arithmetic number, because the mean of its divisors is an integer number (62406240).

Almost surely, 2^517367421 is an apocalyptic number.

It is an amenable number.

517367421 is a deficient number, since it is larger than the sum of its proper divisors (231507459).

517367421 is a wasteful number, since it uses less digits than its factorization.

517367421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120496 (or 120493 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 517367421 is about 22745.7121453693. The cubic root of 517367421 is about 802.7858195223.

The spelling of 517367421 in words is "five hundred seventeen million, three hundred sixty-seven thousand, four hundred twenty-one".