52573666 has 4 divisors (see below), whose sum is σ = 78860502. Its totient is φ = 26286832.

The previous prime is 52573663. The next prime is 52573667. The reversal of 52573666 is 66637525.

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

It can be written as a sum of positive squares in only one way, i.e., 34468641 + 18105025 = 5871^2 + 4255^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (52573663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13143415 + ... + 13143418.

Almost surely, 2^52573666 is an apocalyptic number.

52573666 is a deficient number, since it is larger than the sum of its proper divisors (26286836).

52573666 is a wasteful number, since it uses less digits than its factorization.

52573666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26286835.

The product of its digits is 226800, while the sum is 40.

The square root of 52573666 is about 7250.7700280729. The cubic root of 52573666 is about 374.6186725179.

The spelling of 52573666 in words is "fifty-two million, five hundred seventy-three thousand, six hundred sixty-six".