117457 has 4 divisors (see below), whose sum is σ = 119140. Its totient is φ = 115776.

The previous prime is 117443. The next prime is 117497. The reversal of 117457 is 754711.

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 96721 + 20736 = 311^2 + 144^2 .

It is a cyclic number.

It is not a de Polignac number, because 117457 - 2⁷ = 117329 is a prime.

It is a super-2 number, since 2×117457² = 27592293698, which contains 22 as substring.

It is a Duffinian number.

117457 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (117427) 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, 732 + ... + 877.

It is an arithmetic number, because the mean of its divisors is an integer number (29785).

2¹¹⁷⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

117457 is a deficient number, since it is larger than the sum of its proper divisors (1683).

117457 is an equidigital number, since it uses as much as digits as its factorization.

117457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682.

The product of its digits is 980, while the sum is 25.

The square root of 117457 is about 342.7200023343. The cubic root of 117457 is about 48.9733299263.

It can be divided in two parts, 11745 and 7, that multiplied together give a triangular number (82215 = T₄₀₅).

The spelling of 117457 in words is "one hundred seventeen thousand, four hundred fifty-seven".