245422013 has 4 divisors (see below), whose sum is σ = 259858620. Its totient is φ = 230985408.

The previous prime is 245422007. The next prime is 245422033. The reversal of 245422013 is 310224542.

245422013 = 11077² + 11078².

It is a happy number.

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 122699929 + 122722084 = 11077^2 + 11078^2 .

It is a cyclic number.

It is not a de Polignac number, because 245422013 - 2⁴ = 245421997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 245422013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245422003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7218278 + ... + 7218311.

It is an arithmetic number, because the mean of its divisors is an integer number (64964655).

Almost surely, 2^245422013 is an apocalyptic number.

245422013 is the 11078-th centered square number.

It is an amenable number.

245422013 is a deficient number, since it is larger than the sum of its proper divisors (14436607).

245422013 is a wasteful number, since it uses less digits than its factorization.

245422013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14436606.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 245422013 is about 15665.9507531461. The cubic root of 245422013 is about 626.0915436355.

Adding to 245422013 its reverse (310224542), we get a palindrome (555646555).

The spelling of 245422013 in words is "two hundred forty-five million, four hundred twenty-two thousand, thirteen".