73160581 has 16 divisors (see below), whose sum is σ = 81874800. Its totient is φ = 64931328.

The previous prime is 73160579. The next prime is 73160597. The reversal of 73160581 is 18506137.

It can be written as a sum of positive squares in 8 ways, for example, as 6477025 + 66683556 = 2545^2 + 8166^2 .

It is a cyclic number.

It is not a de Polignac number, because 73160581 - 2¹ = 73160579 is a prime.

It is a super-2 number, since 2×73160581² = 10704941224515122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73160281) 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 in 15 ways as a sum of consecutive naturals, for example, 41955 + ... + 43663.

It is an arithmetic number, because the mean of its divisors is an integer number (5117175).

Almost surely, 2^73160581 is an apocalyptic number.

It is an amenable number.

73160581 is a deficient number, since it is larger than the sum of its proper divisors (8714219).

73160581 is a wasteful number, since it uses less digits than its factorization.

73160581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 73160581 is about 8553.3958753234. The cubic root of 73160581 is about 418.2401438252.

The spelling of 73160581 in words is "seventy-three million, one hundred sixty thousand, five hundred eighty-one".