245444445 has 16 divisors (see below), whose sum is σ = 436345920. Its totient is φ = 130903632.

The previous prime is 245444417. The next prime is 245444447. The reversal of 245444445 is 544444542.

It is not a de Polignac number, because 245444445 - 2²⁵ = 211890013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245444447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 908919 + ... + 909188.

It is an arithmetic number, because the mean of its divisors is an integer number (27271620).

Almost surely, 2^245444445 is an apocalyptic number.

It is an amenable number.

245444445 is a deficient number, since it is larger than the sum of its proper divisors (190901475).

245444445 is a wasteful number, since it uses less digits than its factorization.

245444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818121 (or 1818115 counting only the distinct ones).

The product of its digits is 204800, while the sum is 36.

The square root of 245444445 is about 15666.6666843972. Note that the first 4 decimals coincide. The cubic root of 245444445 is about 626.1106183407.

Adding to 245444445 its reverse (544444542), we get a palindrome (789888987).

The spelling of 245444445 in words is "two hundred forty-five million, four hundred forty-four thousand, four hundred forty-five".