517669542 has 80 divisors (see below), whose sum is σ = 1254440880. Its totient is φ = 158614848.

The previous prime is 517669519. The next prime is 517669549. The reversal of 517669542 is 245966715.

517669542 is a `hidden beast` number, since 517 + 6 + 6 + 95 + 42 = 666.

Its product of digits (453600) is a multiple of the sum of its prime divisors (1050).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517669549) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 785209 + ... + 785867.

It is an arithmetic number, because the mean of its divisors is an integer number (15680511).

Almost surely, 2^517669542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 517669542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627220440).

517669542 is an abundant number, since it is smaller than the sum of its proper divisors (736771338).

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

517669542 is a wasteful number, since it uses less digits than its factorization.

517669542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1050 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 517669542 is about 22752.3524498018. The cubic root of 517669542 is about 802.9420535959.

The spelling of 517669542 in words is "five hundred seventeen million, six hundred sixty-nine thousand, five hundred forty-two".