117325821 has 16 divisors (see below), whose sum is σ = 158531904. Its totient is φ = 77174784.

The previous prime is 117325799. The next prime is 117325837. The reversal of 117325821 is 128523711.

It is not a de Polignac number, because 117325821 - 2⁶ = 117325757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117325121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101181 + ... + 102333.

It is an arithmetic number, because the mean of its divisors is an integer number (9908244).

Almost surely, 2^117325821 is an apocalyptic number.

It is an amenable number.

117325821 is a deficient number, since it is larger than the sum of its proper divisors (41206083).

117325821 is a wasteful number, since it uses less digits than its factorization.

117325821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its digits is 3360, while the sum is 30.

The square root of 117325821 is about 10831.7044365141. The cubic root of 117325821 is about 489.5509157655.

The spelling of 117325821 in words is "one hundred seventeen million, three hundred twenty-five thousand, eight hundred twenty-one".