245440007 has 2 divisors, whose sum is σ = 245440008. Its totient is φ = 245440006.

The previous prime is 245439991. The next prime is 245440009. The reversal of 245440007 is 700044542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245440007 - 2⁴ = 245439991 is a prime.

Together with 245440009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245440009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122720003 + 122720004.

It is an arithmetic number, because the mean of its divisors is an integer number (122720004).

Almost surely, 2^245440007 is an apocalyptic number.

245440007 is a deficient number, since it is larger than the sum of its proper divisors (1).

245440007 is an equidigital number, since it uses as much as digits as its factorization.

245440007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 245440007 is about 15666.5250454592. The cubic root of 245440007 is about 626.1068446481.

Adding to 245440007 its reverse (700044542), we get a palindrome (945484549).

The spelling of 245440007 in words is "two hundred forty-five million, four hundred forty thousand, seven".