161282603 has 2 divisors, whose sum is σ = 161282604. Its totient is φ = 161282602.

The previous prime is 161282531. The next prime is 161282609. The reversal of 161282603 is 306282161.

It is a strong prime.

It is an emirp because it is prime and its reverse (306282161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161282603 - 2⁸ = 161282347 is a prime.

It is not a weakly prime, because it can be changed into another prime (161282609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80641301 + 80641302.

It is an arithmetic number, because the mean of its divisors is an integer number (80641302).

Almost surely, 2^161282603 is an apocalyptic number.

161282603 is a deficient number, since it is larger than the sum of its proper divisors (1).

161282603 is an equidigital number, since it uses as much as digits as its factorization.

161282603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 161282603 is about 12699.7087761885. The cubic root of 161282603 is about 544.3302976752.

The spelling of 161282603 in words is "one hundred sixty-one million, two hundred eighty-two thousand, six hundred three".