5117681 has 4 divisors (see below), whose sum is σ = 5122212. Its totient is φ = 5113152.

The previous prime is 5117653. The next prime is 5117687. The reversal of 5117681 is 1867115.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1081600 + 4036081 = 1040^2 + 2009^2 .

It is a cyclic number.

It is not a de Polignac number, because 5117681 - 2¹⁴ = 5101297 is a prime.

It is a super-2 number, since 2×5117681² = 52381317635522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5117687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965 + ... + 3341.

It is an arithmetic number, because the mean of its divisors is an integer number (1280553).

Almost surely, 2^5117681 is an apocalyptic number.

It is an amenable number.

5117681 is a deficient number, since it is larger than the sum of its proper divisors (4531).

5117681 is a wasteful number, since it uses less digits than its factorization.

5117681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530.

The product of its digits is 1680, while the sum is 29.

The square root of 5117681 is about 2262.2292103145. The cubic root of 5117681 is about 172.3287497414.

It can be divided in two parts, 511 and 7681, that added together give a 13-th power (8192 = 2¹³).

The spelling of 5117681 in words is "five million, one hundred seventeen thousand, six hundred eighty-one".