117573509 has 2 divisors, whose sum is σ = 117573510. Its totient is φ = 117573508.

The previous prime is 117573497. The next prime is 117573523. The reversal of 117573509 is 905375711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 717409 = 10810^2 + 847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117573509 is a prime.

It is a super-3 number, since 3×117573509³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117575509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58786754 + 58786755.

It is an arithmetic number, because the mean of its divisors is an integer number (58786755).

Almost surely, 2^117573509 is an apocalyptic number.

It is an amenable number.

117573509 is a deficient number, since it is larger than the sum of its proper divisors (1).

117573509 is an equidigital number, since it uses as much as digits as its factorization.

117573509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33075, while the sum is 38.

The square root of 117573509 is about 10843.1318815184. The cubic root of 117573509 is about 489.8951726331.

The spelling of 117573509 in words is "one hundred seventeen million, five hundred seventy-three thousand, five hundred nine".