161553463 has 2 divisors, whose sum is σ = 161553464. Its totient is φ = 161553462.

The previous prime is 161553443. The next prime is 161553473. The reversal of 161553463 is 364355161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161553463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161553443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80776731 + 80776732.

It is an arithmetic number, because the mean of its divisors is an integer number (80776732).

Almost surely, 2^161553463 is an apocalyptic number.

161553463 is a deficient number, since it is larger than the sum of its proper divisors (1).

161553463 is an equidigital number, since it uses as much as digits as its factorization.

161553463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 161553463 is about 12710.3683266851. The cubic root of 161553463 is about 544.6348455983.

The spelling of 161553463 in words is "one hundred sixty-one million, five hundred fifty-three thousand, four hundred sixty-three".