245100005 has 4 divisors (see below), whose sum is σ = 294120012. Its totient is φ = 196080000.

The previous prime is 245100001. The next prime is 245100007. The reversal of 245100005 is 500001542.

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 26030404 + 219069601 = 5102^2 + 14801^2 .

It is not a de Polignac number, because 245100005 - 2² = 245100001 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 (245100001) 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 3 ways as a sum of consecutive naturals, for example, 24509996 + ... + 24510005.

It is an arithmetic number, because the mean of its divisors is an integer number (73530003).

Almost surely, 2^245100005 is an apocalyptic number.

It is an amenable number.

245100005 is a deficient number, since it is larger than the sum of its proper divisors (49020007).

245100005 is an equidigital number, since it uses as much as digits as its factorization.

245100005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49020006.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 245100005 is about 15655.6700591192. The cubic root of 245100005 is about 625.8176009129.

Adding to 245100005 its reverse (500001542), we get a palindrome (745101547).

The spelling of 245100005 in words is "two hundred forty-five million, one hundred thousand, five".