245445321001 has 4 divisors (see below), whose sum is σ = 246004422400. Its totient is φ = 244886219604.

The previous prime is 245445320977. The next prime is 245445321019. The reversal of 245445321001 is 100123544542.

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 a de Polignac number, because none of the positive numbers 2^k-245445321001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245445321091) 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, 279550041 + ... + 279550918.

It is an arithmetic number, because the mean of its divisors is an integer number (61501105600).

Almost surely, 2^245445321001 is an apocalyptic number.

It is an amenable number.

245445321001 is a deficient number, since it is larger than the sum of its proper divisors (559101399).

245445321001 is an equidigital number, since it uses as much as digits as its factorization.

245445321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559101398.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 245445321001 its reverse (100123544542), we get a palindrome (345568865543).

The spelling of 245445321001 in words is "two hundred forty-five billion, four hundred forty-five million, three hundred twenty-one thousand, one".