73481273 has 4 divisors (see below), whose sum is σ = 76015140. Its totient is φ = 70947408.

The previous prime is 73481269. The next prime is 73481321. The reversal of 73481273 is 37218437.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33500944 + 39980329 = 5788^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 73481273 - 2² = 73481269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73481203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1266890 + ... + 1266947.

It is an arithmetic number, because the mean of its divisors is an integer number (19003785).

Almost surely, 2^73481273 is an apocalyptic number.

It is an amenable number.

73481273 is a deficient number, since it is larger than the sum of its proper divisors (2533867).

73481273 is a wasteful number, since it uses less digits than its factorization.

73481273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533866.

The product of its digits is 28224, while the sum is 35.

The square root of 73481273 is about 8572.1218493440. The cubic root of 73481273 is about 418.8503575310.

The spelling of 73481273 in words is "seventy-three million, four hundred eighty-one thousand, two hundred seventy-three".