161214503 has 2 divisors, whose sum is σ = 161214504. Its totient is φ = 161214502.

The previous prime is 161214497. The next prime is 161214523. The reversal of 161214503 is 305412161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161214503 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161214523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80607251 + 80607252.

It is an arithmetic number, because the mean of its divisors is an integer number (80607252).

Almost surely, 2^161214503 is an apocalyptic number.

161214503 is a deficient number, since it is larger than the sum of its proper divisors (1).

161214503 is an equidigital number, since it uses as much as digits as its factorization.

161214503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 161214503 is about 12697.0273292610. The cubic root of 161214503 is about 544.2536741768.

Adding to 161214503 its reverse (305412161), we get a palindrome (466626664).

The spelling of 161214503 in words is "one hundred sixty-one million, two hundred fourteen thousand, five hundred three".