161461211 has 2 divisors, whose sum is σ = 161461212. Its totient is φ = 161461210.

The previous prime is 161461207. The next prime is 161461301. The reversal of 161461211 is 112164161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161461211 - 2² = 161461207 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161461511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80730605 + 80730606.

It is an arithmetic number, because the mean of its divisors is an integer number (80730606).

Almost surely, 2^161461211 is an apocalyptic number.

161461211 is a deficient number, since it is larger than the sum of its proper divisors (1).

161461211 is an equidigital number, since it uses as much as digits as its factorization.

161461211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 23.

The square root of 161461211 is about 12706.7388026984. The cubic root of 161461211 is about 544.5311581059.

The spelling of 161461211 in words is "one hundred sixty-one million, four hundred sixty-one thousand, two hundred eleven".