517620542 has 16 divisors (see below), whose sum is σ = 783221712. Its totient is φ = 256556160.

The previous prime is 517620517. The next prime is 517620559. The reversal of 517620542 is 245026715.

It is a junction number, because it is equal to n+sod(n) for n = 517620499 and 517620508.

It is a congruent number.

It is an unprimeable number.

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, 119873 + ... + 124115.

It is an arithmetic number, because the mean of its divisors is an integer number (48951357).

Almost surely, 2^517620542 is an apocalyptic number.

517620542 is a deficient number, since it is larger than the sum of its proper divisors (265601170).

517620542 is a wasteful number, since it uses less digits than its factorization.

517620542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 517620542 is about 22751.2756125893. The cubic root of 517620542 is about 802.9167186419.

The spelling of 517620542 in words is "five hundred seventeen million, six hundred twenty thousand, five hundred forty-two".