117027581 has 4 divisors (see below), whose sum is σ = 127666464. Its totient is φ = 106388700.

The previous prime is 117027577. The next prime is 117027587. The reversal of 117027581 is 185720711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 117027581 - 2² = 117027577 is a prime.

It is a super-2 number, since 2×117027581² = 27390909429423122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117027587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319425 + ... + 5319446.

It is an arithmetic number, because the mean of its divisors is an integer number (31916616).

Almost surely, 2^117027581 is an apocalyptic number.

117027581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117027581 is a deficient number, since it is larger than the sum of its proper divisors (10638883).

117027581 is a wasteful number, since it uses less digits than its factorization.

117027581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638882.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 117027581 is about 10817.9286834403. The cubic root of 117027581 is about 489.1357540909.

The spelling of 117027581 in words is "one hundred seventeen million, twenty-seven thousand, five hundred eighty-one".