161124461 has 2 divisors, whose sum is σ = 161124462. Its totient is φ = 161124460.

The previous prime is 161124451. The next prime is 161124473. The reversal of 161124461 is 164421161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118679236 + 42445225 = 10894^2 + 6515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161124461 is a prime.

It is a super-2 number, since 2×161124461² = 51922183865081042, which contains 22 as substring.

It is a Chen prime.

It is equal to p_9034145 and since 161124461 and 9034145 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161124461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161124451) 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, 80562230 + 80562231.

It is an arithmetic number, because the mean of its divisors is an integer number (80562231).

Almost surely, 2^161124461 is an apocalyptic number.

It is an amenable number.

161124461 is a deficient number, since it is larger than the sum of its proper divisors (1).

161124461 is an equidigital number, since it uses as much as digits as its factorization.

161124461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 161124461 is about 12693.4810434333. The cubic root of 161124461 is about 544.1523292505.

The spelling of 161124461 in words is "one hundred sixty-one million, one hundred twenty-four thousand, four hundred sixty-one".