245512445 has 4 divisors (see below), whose sum is σ = 294614940. Its totient is φ = 196409952.

The previous prime is 245512441. The next prime is 245512447. The reversal of 245512445 is 544215542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133702969 + 111809476 = 11563^2 + 10574^2 .

It is a cyclic number.

It is not a de Polignac number, because 245512445 - 2² = 245512441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245512441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24551240 + ... + 24551249.

It is an arithmetic number, because the mean of its divisors is an integer number (73653735).

Almost surely, 2^245512445 is an apocalyptic number.

It is an amenable number.

245512445 is a deficient number, since it is larger than the sum of its proper divisors (49102495).

245512445 is an equidigital number, since it uses as much as digits as its factorization.

245512445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49102494.

The product of its digits is 32000, while the sum is 32.

The square root of 245512445 is about 15668.8367468680. The cubic root of 245512445 is about 626.1684339913.

Adding to 245512445 its reverse (544215542), we get a palindrome (789727987).

The spelling of 245512445 in words is "two hundred forty-five million, five hundred twelve thousand, four hundred forty-five".