245211943 has 2 divisors, whose sum is σ = 245211944. Its totient is φ = 245211942.

The previous prime is 245211931. The next prime is 245211949. The reversal of 245211943 is 349112542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245211943 - 2²¹ = 243114791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245211949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122605971 + 122605972.

It is an arithmetic number, because the mean of its divisors is an integer number (122605972).

Almost surely, 2^245211943 is an apocalyptic number.

245211943 is a deficient number, since it is larger than the sum of its proper divisors (1).

245211943 is an equidigital number, since it uses as much as digits as its factorization.

245211943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 245211943 is about 15659.2446497269. The cubic root of 245211943 is about 625.9128574170.

The spelling of 245211943 in words is "two hundred forty-five million, two hundred eleven thousand, nine hundred forty-three".