161226459 has 12 divisors (see below), whose sum is σ = 233590552. Its totient is φ = 107157600.

The previous prime is 161226451. The next prime is 161226491. The reversal of 161226459 is 954622161.

161226459 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 2 + 645 + 9 = 666.

It is not a de Polignac number, because 161226459 - 2³ = 161226451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161226451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24082 + ... + 30039.

Almost surely, 2^161226459 is an apocalyptic number.

161226459 is a deficient number, since it is larger than the sum of its proper divisors (72364093).

161226459 is a wasteful number, since it uses less digits than its factorization.

161226459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54458 (or 54455 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 161226459 is about 12697.4981393974. The cubic root of 161226459 is about 544.2671281691.

The spelling of 161226459 in words is "one hundred sixty-one million, two hundred twenty-six thousand, four hundred fifty-nine".