245753891 has 2 divisors, whose sum is σ = 245753892. Its totient is φ = 245753890.

The previous prime is 245753881. The next prime is 245753897. The reversal of 245753891 is 198357542.

245753891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245753891 is a prime.

It is not a weakly prime, because it can be changed into another prime (245753897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122876945 + 122876946.

It is an arithmetic number, because the mean of its divisors is an integer number (122876946).

Almost surely, 2^245753891 is an apocalyptic number.

245753891 is a deficient number, since it is larger than the sum of its proper divisors (1).

245753891 is an equidigital number, since it uses as much as digits as its factorization.

245753891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 245753891 is about 15676.5395097260. The cubic root of 245753891 is about 626.3736324558.

The spelling of 245753891 in words is "two hundred forty-five million, seven hundred fifty-three thousand, eight hundred ninety-one".