161252879 has 2 divisors, whose sum is σ = 161252880. Its totient is φ = 161252878.

The previous prime is 161252831. The next prime is 161252887. The reversal of 161252879 is 978252161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161252879 - 2¹² = 161248783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161252899) 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, 80626439 + 80626440.

It is an arithmetic number, because the mean of its divisors is an integer number (80626440).

Almost surely, 2^161252879 is an apocalyptic number.

161252879 is a deficient number, since it is larger than the sum of its proper divisors (1).

161252879 is an equidigital number, since it uses as much as digits as its factorization.

161252879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 161252879 is about 12698.5384592086. The cubic root of 161252879 is about 544.2968560278.

The spelling of 161252879 in words is "one hundred sixty-one million, two hundred fifty-two thousand, eight hundred seventy-nine".