117261497 has 4 divisors (see below), whose sum is σ = 119249040. Its totient is φ = 115273956.

The previous prime is 117261481. The next prime is 117261523. The reversal of 117261497 is 794162711.

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, and also an emirpimes, since its reverse is a distinct semiprime: 794162711 = 1009 ⋅787079.

It is a cyclic number.

It is not a de Polignac number, because 117261497 - 2⁴ = 117261481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117261497.

It is not an unprimeable number, because it can be changed into a prime (117261097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993683 + ... + 993800.

It is an arithmetic number, because the mean of its divisors is an integer number (29812260).

Almost surely, 2^117261497 is an apocalyptic number.

It is an amenable number.

117261497 is a deficient number, since it is larger than the sum of its proper divisors (1987543).

117261497 is an equidigital number, since it uses as much as digits as its factorization.

117261497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987542.

The product of its digits is 21168, while the sum is 38.

The square root of 117261497 is about 10828.7347829744. The cubic root of 117261497 is about 489.4614338158.

It can be divided in two parts, 1172614 and 97, that added together give a palindrome (1172711).

The spelling of 117261497 in words is "one hundred seventeen million, two hundred sixty-one thousand, four hundred ninety-seven".