117545757 has 20 divisors (see below), whose sum is σ = 182849280. Its totient is φ = 67164888.

The previous prime is 117545749. The next prime is 117545777. The reversal of 117545757 is 757545711.

It is not a de Polignac number, because 117545757 - 2³ = 117545749 is a prime.

It is a super-4 number, since 4×117545757⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117545777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 957 + ... + 15362.

It is an arithmetic number, because the mean of its divisors is an integer number (9142464).

Almost surely, 2^117545757 is an apocalyptic number.

It is an amenable number.

117545757 is a deficient number, since it is larger than the sum of its proper divisors (65303523).

117545757 is an frugal number, since it uses more digits than its factorization.

117545757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16350 (or 16329 counting only the distinct ones).

The product of its digits is 171500, while the sum is 42.

The square root of 117545757 is about 10841.8521019243. The cubic root of 117545757 is about 489.8566247188.

The spelling of 117545757 in words is "one hundred seventeen million, five hundred forty-five thousand, seven hundred fifty-seven".