245494747 has 2 divisors, whose sum is σ = 245494748. Its totient is φ = 245494746.

The previous prime is 245494723. The next prime is 245494787. The reversal of 245494747 is 747494542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245494747 - 2⁷ = 245494619 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 245494697 and 245494706.

It is not a weakly prime, because it can be changed into another prime (245494787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122747373 + 122747374.

It is an arithmetic number, because the mean of its divisors is an integer number (122747374).

Almost surely, 2^245494747 is an apocalyptic number.

245494747 is a deficient number, since it is larger than the sum of its proper divisors (1).

245494747 is an equidigital number, since it uses as much as digits as its factorization.

245494747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 46.

The square root of 245494747 is about 15668.2719851297. The cubic root of 245494747 is about 626.1533876458.

The spelling of 245494747 in words is "two hundred forty-five million, four hundred ninety-four thousand, seven hundred forty-seven".