117517481 has 8 divisors (see below), whose sum is σ = 124548264. Its totient is φ = 110499840.

The previous prime is 117517457. The next prime is 117517487. The reversal of 117517481 is 184715711.

It can be written as a sum of positive squares in 4 ways, for example, as 92467456 + 25050025 = 9616^2 + 5005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117517481 - 2⁶ = 117517417 is a prime.

It is a super-2 number, since 2×117517481² = 27620716681170722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117517487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19841 + ... + 25073.

It is an arithmetic number, because the mean of its divisors is an integer number (15568533).

Almost surely, 2^117517481 is an apocalyptic number.

It is an amenable number.

117517481 is a deficient number, since it is larger than the sum of its proper divisors (7030783).

117517481 is a wasteful number, since it uses less digits than its factorization.

117517481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6571.

The product of its digits is 7840, while the sum is 35.

The square root of 117517481 is about 10840.5480027534. The cubic root of 117517481 is about 489.8173427204.

The spelling of 117517481 in words is "one hundred seventeen million, five hundred seventeen thousand, four hundred eighty-one".