245444747 has 2 divisors, whose sum is σ = 245444748. Its totient is φ = 245444746.

The previous prime is 245444729. The next prime is 245444813. The reversal of 245444747 is 747444542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245444747 - 2²⁴ = 228667531 is a prime.

It is not a weakly prime, because it can be changed into another prime (245444447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122722373 + 122722374.

It is an arithmetic number, because the mean of its divisors is an integer number (122722374).

Almost surely, 2^245444747 is an apocalyptic number.

245444747 is a deficient number, since it is larger than the sum of its proper divisors (1).

245444747 is an equidigital number, since it uses as much as digits as its factorization.

245444747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501760, while the sum is 41.

The square root of 245444747 is about 15666.6763226921. The cubic root of 245444747 is about 626.1108751338.

The spelling of 245444747 in words is "two hundred forty-five million, four hundred forty-four thousand, seven hundred forty-seven".