117513745 has 4 divisors (see below), whose sum is σ = 141016500. Its totient is φ = 94010992.

The previous prime is 117513743. The next prime is 117513757. The reversal of 117513745 is 547315711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69239041 + 48274704 = 8321^2 + 6948^2 .

It is a cyclic number.

It is not a de Polignac number, because 117513745 - 2¹ = 117513743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117513745.

It is not an unprimeable number, because it can be changed into a prime (117513743) 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, 11751370 + ... + 11751379.

It is an arithmetic number, because the mean of its divisors is an integer number (35254125).

Almost surely, 2^117513745 is an apocalyptic number.

It is an amenable number.

117513745 is a deficient number, since it is larger than the sum of its proper divisors (23502755).

117513745 is an equidigital number, since it uses as much as digits as its factorization.

117513745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23502754.

The product of its digits is 14700, while the sum is 34.

The square root of 117513745 is about 10840.3756853718. The cubic root of 117513745 is about 489.8121520685.

The spelling of 117513745 in words is "one hundred seventeen million, five hundred thirteen thousand, seven hundred forty-five".