245356247 has 2 divisors, whose sum is σ = 245356248. Its totient is φ = 245356246.

The previous prime is 245356231. The next prime is 245356271. The reversal of 245356247 is 742653542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245356247 - 2⁴ = 245356231 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245356247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245356207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122678123 + 122678124.

It is an arithmetic number, because the mean of its divisors is an integer number (122678124).

Almost surely, 2^245356247 is an apocalyptic number.

245356247 is a deficient number, since it is larger than the sum of its proper divisors (1).

245356247 is an equidigital number, since it uses as much as digits as its factorization.

245356247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 38.

The square root of 245356247 is about 15663.8516016975. The cubic root of 245356247 is about 626.0356138319.

The spelling of 245356247 in words is "two hundred forty-five million, three hundred fifty-six thousand, two hundred forty-seven".