245644201 has 4 divisors (see below), whose sum is σ = 267975504. Its totient is φ = 223312900.

The previous prime is 245644159. The next prime is 245644249. The reversal of 245644201 is 102446542.

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 not a de Polignac number, because 245644201 - 2⁹ = 245643689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245644201.

It is not an unprimeable number, because it can be changed into a prime (245645201) 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, 11165635 + ... + 11165656.

It is an arithmetic number, because the mean of its divisors is an integer number (66993876).

Almost surely, 2^245644201 is an apocalyptic number.

It is an amenable number.

245644201 is a deficient number, since it is larger than the sum of its proper divisors (22331303).

245644201 is a wasteful number, since it uses less digits than its factorization.

245644201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22331302.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 245644201 is about 15673.0405792877. The cubic root of 245644201 is about 626.2804265412.

It can be divided in two parts, 245 and 644201, that added together give a palindrome (644446).

The spelling of 245644201 in words is "two hundred forty-five million, six hundred forty-four thousand, two hundred one".