173274561 has 12 divisors (see below), whose sum is σ = 250546660. Its totient is φ = 115395840.

The previous prime is 173274559. The next prime is 173274599. The reversal of 173274561 is 165472371.

It is a happy number.

173274561 is a `hidden beast` number, since 1 + 73 + 27 + 4 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40564161 + 132710400 = 6369^2 + 11520^2 .

It is not a de Polignac number, because 173274561 - 2¹ = 173274559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173274511) 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, 460 + ... + 18621.

Almost surely, 2^173274561 is an apocalyptic number.

It is an amenable number.

173274561 is a deficient number, since it is larger than the sum of its proper divisors (77272099).

173274561 is a wasteful number, since it uses less digits than its factorization.

173274561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20096 (or 20093 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 173274561 is about 13163.3795432632. The cubic root of 173274561 is about 557.5000821787.

The spelling of 173274561 in words is "one hundred seventy-three million, two hundred seventy-four thousand, five hundred sixty-one".