245820107 has 4 divisors (see below), whose sum is σ = 264729360. Its totient is φ = 226910856.

The previous prime is 245820097. The next prime is 245820131. The reversal of 245820107 is 701028542.

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

It is a cyclic number.

It is not a de Polignac number, because 245820107 - 2¹⁶ = 245754571 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 245820107.

It is not an unprimeable number, because it can be changed into a prime (245820167) 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, 9454607 + ... + 9454632.

It is an arithmetic number, because the mean of its divisors is an integer number (66182340).

Almost surely, 2^245820107 is an apocalyptic number.

245820107 is a deficient number, since it is larger than the sum of its proper divisors (18909253).

245820107 is a wasteful number, since it uses less digits than its factorization.

245820107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18909252.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 245820107 is about 15678.6513131710. The cubic root of 245820107 is about 626.4298841686.

Adding to 245820107 its reverse (701028542), we get a palindrome (946848649).

The spelling of 245820107 in words is "two hundred forty-five million, eight hundred twenty thousand, one hundred seven".