245442773 has 4 divisors (see below), whose sum is σ = 249602880. Its totient is φ = 241282668.

The previous prime is 245442751. The next prime is 245442781. The reversal of 245442773 is 377244542.

It is a happy number.

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 245442773 - 2⁶ = 245442709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245442173) 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 3 ways as a sum of consecutive naturals, for example, 2079965 + ... + 2080082.

It is an arithmetic number, because the mean of its divisors is an integer number (62400720).

Almost surely, 2^245442773 is an apocalyptic number.

It is an amenable number.

245442773 is a deficient number, since it is larger than the sum of its proper divisors (4160107).

245442773 is an equidigital number, since it uses as much as digits as its factorization.

245442773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160106.

The product of its digits is 188160, while the sum is 38.

The square root of 245442773 is about 15666.6133226042. The cubic root of 245442773 is about 626.1091966214.

The spelling of 245442773 in words is "two hundred forty-five million, four hundred forty-two thousand, seven hundred seventy-three".