5171100781 has 48 divisors (see below), whose sum is σ = 7003229760. Its totient is φ = 3764517120.

The previous prime is 5171100721. The next prime is 5171100799. The reversal of 5171100781 is 1870011715.

It is not a de Polignac number, because 5171100781 - 2¹¹ = 5171098733 is a prime.

It is a super-2 number, since 2×5171100781² = 53480566574517619922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5171100721) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 744135 + ... + 751051.

It is an arithmetic number, because the mean of its divisors is an integer number (145900620).

Almost surely, 2^5171100781 is an apocalyptic number.

It is an amenable number.

5171100781 is a deficient number, since it is larger than the sum of its proper divisors (1832128979).

5171100781 is a wasteful number, since it uses less digits than its factorization.

5171100781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034 (or 7027 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 31.

The square root of 5171100781 is about 71910.3662972175. The cubic root of 5171100781 is about 1729.2628065169.

The spelling of 5171100781 in words is "five billion, one hundred seventy-one million, one hundred thousand, seven hundred eighty-one".