491517102 has 32 divisors (see below), whose sum is σ = 1034246304. Its totient is φ = 155520000.

The previous prime is 491517097. The next prime is 491517113. The reversal of 491517102 is 201715194.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 491517102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17899 + ... + 36102.

It is an arithmetic number, because the mean of its divisors is an integer number (32320197).

Almost surely, 2^491517102 is an apocalyptic number.

491517102 is an abundant number, since it is smaller than the sum of its proper divisors (542729202).

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

491517102 is a wasteful number, since it uses less digits than its factorization.

491517102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54084.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 491517102 is about 22170.1849789306. The cubic root of 491517102 is about 789.1863127665.

It can be divided in two parts, 49 and 1517102, that added together give a palindrome (1517151).

The spelling of 491517102 in words is "four hundred ninety-one million, five hundred seventeen thousand, one hundred two".