117217154 has 16 divisors (see below), whose sum is σ = 187377408. Its totient is φ = 54866592.

The previous prime is 117217153. The next prime is 117217157. The reversal of 117217154 is 451712711.

It is a super-2 number, since 2×117217154² = 27479722383719432, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117217151) 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, 24947 + ... + 29270.

It is an arithmetic number, because the mean of its divisors is an integer number (11711088).

Almost surely, 2^117217154 is an apocalyptic number.

117217154 is a deficient number, since it is larger than the sum of its proper divisors (70160254).

117217154 is a wasteful number, since it uses less digits than its factorization.

117217154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54289.

The product of its digits is 1960, while the sum is 29.

The square root of 117217154 is about 10826.6871202598. The cubic root of 117217154 is about 489.3997286374.

Adding to 117217154 its reverse (451712711), we get a palindrome (568929865).

The spelling of 117217154 in words is "one hundred seventeen million, two hundred seventeen thousand, one hundred fifty-four".