245201291 has 2 divisors, whose sum is σ = 245201292. Its totient is φ = 245201290.

The previous prime is 245201287. The next prime is 245201309. The reversal of 245201291 is 192102542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245201291 - 2² = 245201287 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 245201291.

It is not a weakly prime, because it can be changed into another prime (245201191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122600645 + 122600646.

It is an arithmetic number, because the mean of its divisors is an integer number (122600646).

Almost surely, 2^245201291 is an apocalyptic number.

245201291 is a deficient number, since it is larger than the sum of its proper divisors (1).

245201291 is an equidigital number, since it uses as much as digits as its factorization.

245201291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 245201291 is about 15658.9045274566. The cubic root of 245201291 is about 625.9037940734.

The spelling of 245201291 in words is "two hundred forty-five million, two hundred one thousand, two hundred ninety-one".