161217514 has 4 divisors (see below), whose sum is σ = 241826274. Its totient is φ = 80608756.

The previous prime is 161217503. The next prime is 161217517. The reversal of 161217514 is 415712161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415712161 = 41 ⋅10139321.

It can be written as a sum of positive squares in only one way, i.e., 139641489 + 21576025 = 11817^2 + 4645^2 .

It is not an unprimeable number, because it can be changed into a prime (161217517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40304377 + ... + 40304380.

Almost surely, 2^161217514 is an apocalyptic number.

161217514 is a deficient number, since it is larger than the sum of its proper divisors (80608760).

161217514 is an equidigital number, since it uses as much as digits as its factorization.

161217514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80608759.

The product of its digits is 1680, while the sum is 28.

The square root of 161217514 is about 12697.1458997682. The cubic root of 161217514 is about 544.2570624939.

Adding to 161217514 its reverse (415712161), we get a palindrome (576929675).

The spelling of 161217514 in words is "one hundred sixty-one million, two hundred seventeen thousand, five hundred fourteen".