245773 has 4 divisors (see below), whose sum is σ = 268128. Its totient is φ = 223420.

The previous prime is 245771. The next prime is 245783. The reversal of 245773 is 377542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245773 - 2¹ = 245771 is a prime.

It is a Duffinian number.

245773 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11161 + ... + 11182.

It is an arithmetic number, because the mean of its divisors is an integer number (67032).

245773 is a Friedman number, since it can be written as 7+3*(5*4^7+2), using all its digits and the basic arithmetic operations.

2²⁴⁵⁷⁷³ is an apocalyptic number.

It is an amenable number.

245773 is a deficient number, since it is larger than the sum of its proper divisors (22355).

245773 is a wasteful number, since it uses less digits than its factorization.

245773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22354.

The product of its digits is 5880, while the sum is 28.

The square root of 245773 is about 495.7549798035. The cubic root of 245773 is about 62.6389866941.

Subtracting 245773 from its reverse (377542), we obtain a square (131769 = 363²).

The spelling of 245773 in words is "two hundred forty-five thousand, seven hundred seventy-three".