117549901 has 4 divisors (see below), whose sum is σ = 134342752. Its totient is φ = 100757052.

The previous prime is 117549899. The next prime is 117549947. The reversal of 117549901 is 109945711.

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, and also an emirpimes, since its reverse is a distinct semiprime: 109945711 = 43 ⋅2556877.

It is a cyclic number.

It is not a de Polignac number, because 117549901 - 2¹ = 117549899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117549001) 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 3 ways as a sum of consecutive naturals, for example, 8396415 + ... + 8396428.

It is an arithmetic number, because the mean of its divisors is an integer number (33585688).

Almost surely, 2^117549901 is an apocalyptic number.

It is an amenable number.

117549901 is a deficient number, since it is larger than the sum of its proper divisors (16792851).

117549901 is an equidigital number, since it uses as much as digits as its factorization.

117549901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16792850.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 117549901 is about 10842.0432114985. The cubic root of 117549901 is about 489.8623811778.

It can be divided in two parts, 1175 and 49901, that added together give a square (51076 = 226²).

The spelling of 117549901 in words is "one hundred seventeen million, five hundred forty-nine thousand, nine hundred one".