117020251 has 8 divisors (see below), whose sum is σ = 123655680. Its totient is φ = 110513832.

The previous prime is 117020227. The next prime is 117020263. The reversal of 117020251 is 152020711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117020251 - 2⁵ = 117020219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117020291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30385 + ... + 34018.

It is an arithmetic number, because the mean of its divisors is an integer number (15456960).

Almost surely, 2^117020251 is an apocalyptic number.

117020251 is a deficient number, since it is larger than the sum of its proper divisors (6635429).

117020251 is an equidigital number, since it uses as much as digits as its factorization.

117020251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64505.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 117020251 is about 10817.5898886952. The cubic root of 117020251 is about 489.1255415697.

Adding to 117020251 its reverse (152020711), we get a palindrome (269040962).

The spelling of 117020251 in words is "one hundred seventeen million, twenty thousand, two hundred fifty-one".