117875621 has 4 divisors (see below), whose sum is σ = 123000672. Its totient is φ = 112750572.

The previous prime is 117875573. The next prime is 117875627. The reversal of 117875621 is 126578711.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 117875621 - 2⁶ = 117875557 is a prime.

It is a super-2 number, since 2×117875621² = 27789324052271282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117875627) 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, 2562491 + ... + 2562536.

It is an arithmetic number, because the mean of its divisors is an integer number (30750168).

Almost surely, 2^117875621 is an apocalyptic number.

It is an amenable number.

117875621 is a deficient number, since it is larger than the sum of its proper divisors (5125051).

117875621 is an equidigital number, since it uses as much as digits as its factorization.

117875621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125050.

The product of its digits is 23520, while the sum is 38.

The square root of 117875621 is about 10857.0539742602. The cubic root of 117875621 is about 490.3144185009.

The spelling of 117875621 in words is "one hundred seventeen million, eight hundred seventy-five thousand, six hundred twenty-one".