161463556 has 6 divisors (see below), whose sum is σ = 282561230. Its totient is φ = 80731776.

The previous prime is 161463529. The next prime is 161463629. The reversal of 161463556 is 655364161.

It can be written as a sum of positive squares in only one way, i.e., 144817156 + 16646400 = 12034^2 + 4080^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20182941 + ... + 20182948.

Almost surely, 2^161463556 is an apocalyptic number.

It is an amenable number.

161463556 is a deficient number, since it is larger than the sum of its proper divisors (121097674).

161463556 is a wasteful number, since it uses less digits than its factorization.

161463556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40365893 (or 40365891 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 161463556 is about 12706.8310762361. The cubic root of 161463556 is about 544.5337942796.

The spelling of 161463556 in words is "one hundred sixty-one million, four hundred sixty-three thousand, five hundred fifty-six".