117252661 has 8 divisors (see below), whose sum is σ = 120273048. Its totient is φ = 114240000.

The previous prime is 117252649. The next prime is 117252671. The reversal of 117252661 is 166252711.

It can be written as a sum of positive squares in 4 ways, for example, as 2869636 + 114383025 = 1694^2 + 10695^2 .

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 117252661 - 2¹³ = 117244469 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 (117252601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40461 + ... + 43261.

It is an arithmetic number, because the mean of its divisors is an integer number (15034131).

Almost surely, 2^117252661 is an apocalyptic number.

It is an amenable number.

117252661 is a deficient number, since it is larger than the sum of its proper divisors (3020387).

117252661 is a wasteful number, since it uses less digits than its factorization.

117252661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863.

The product of its digits is 5040, while the sum is 31.

The square root of 117252661 is about 10828.3267867201. The cubic root of 117252661 is about 489.4491393856.

Subtracting 117252661 from its reverse (166252711), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 117252661 in words is "one hundred seventeen million, two hundred fifty-two thousand, six hundred sixty-one".