245349745 has 16 divisors (see below), whose sum is σ = 297159552. Its totient is φ = 194463360.

The previous prime is 245349737. The next prime is 245349749. The reversal of 245349745 is 547943542.

It is not a de Polignac number, because 245349745 - 2³ = 245349737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245349749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329844 + ... + 330586.

It is an arithmetic number, because the mean of its divisors is an integer number (18572472).

Almost surely, 2^245349745 is an apocalyptic number.

It is an amenable number.

245349745 is a deficient number, since it is larger than the sum of its proper divisors (51809807).

245349745 is a wasteful number, since it uses less digits than its factorization.

245349745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its digits is 604800, while the sum is 43.

The square root of 245349745 is about 15663.6440523909. The cubic root of 245349745 is about 626.0300837513.

It can be divided in two parts, 2453497 and 45, that added together give a palindrome (2453542).

The spelling of 245349745 in words is "two hundred forty-five million, three hundred forty-nine thousand, seven hundred forty-five".