117553906 has 4 divisors (see below), whose sum is σ = 176330862. Its totient is φ = 58776952.

The previous prime is 117553879. The next prime is 117553927. The reversal of 117553906 is 609355711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609355711 = 199 ⋅3062089.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 42575625 = 8659^2 + 6525^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29388475 + ... + 29388478.

Almost surely, 2^117553906 is an apocalyptic number.

117553906 is a deficient number, since it is larger than the sum of its proper divisors (58776956).

117553906 is an equidigital number, since it uses as much as digits as its factorization.

117553906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58776955.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 117553906 is about 10842.2279075843. The cubic root of 117553906 is about 489.8679444224.

The spelling of 117553906 in words is "one hundred seventeen million, five hundred fifty-three thousand, nine hundred six".