74573 has 2 divisors, whose sum is σ = 74574. Its totient is φ = 74572.

The previous prime is 74567. The next prime is 74587. The reversal of 74573 is 37547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68644 + 5929 = 262^2 + 77^2 .

It is an emirp because it is prime and its reverse (37547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74573 - 2⁶ = 74509 is a prime.

It is a super-2 number, since 2×74573² = 11122264658, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37286 + 37287.

It is an arithmetic number, because the mean of its divisors is an integer number (37287).

2⁷⁴⁵⁷³ is an apocalyptic number.

It is an amenable number.

74573 is a deficient number, since it is larger than the sum of its proper divisors (1).

74573 is an equidigital number, since it uses as much as digits as its factorization.

74573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2940, while the sum is 26.

The square root of 74573 is about 273.0805741901. The cubic root of 74573 is about 42.0914485107.

Subtracting from 74573 its sum of digits (26), we obtain a palindrome (74547).

It can be divided in two parts, 745 and 73, that added together give a palindrome (818).

The spelling of 74573 in words is "seventy-four thousand, five hundred seventy-three".