161353499 has 2 divisors, whose sum is σ = 161353500. Its totient is φ = 161353498.

The previous prime is 161353427. The next prime is 161353589. The reversal of 161353499 is 994353161.

It is a weak prime.

It is an emirp because it is prime and its reverse (994353161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161353499 - 2¹⁶ = 161287963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161353099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80676749 + 80676750.

It is an arithmetic number, because the mean of its divisors is an integer number (80676750).

Almost surely, 2^161353499 is an apocalyptic number.

161353499 is a deficient number, since it is larger than the sum of its proper divisors (1).

161353499 is an equidigital number, since it uses as much as digits as its factorization.

161353499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 161353499 is about 12702.4997146231. The cubic root of 161353499 is about 544.4100442130.

The spelling of 161353499 in words is "one hundred sixty-one million, three hundred fifty-three thousand, four hundred ninety-nine".