245526247 has 2 divisors, whose sum is σ = 245526248. Its totient is φ = 245526246.

The previous prime is 245526217. The next prime is 245526289. The reversal of 245526247 is 742625542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245526247 - 2²³ = 237137639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245526217) 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, 122763123 + 122763124.

It is an arithmetic number, because the mean of its divisors is an integer number (122763124).

Almost surely, 2^245526247 is an apocalyptic number.

245526247 is a deficient number, since it is larger than the sum of its proper divisors (1).

245526247 is an equidigital number, since it uses as much as digits as its factorization.

245526247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 37.

The square root of 245526247 is about 15669.2771690337. The cubic root of 245526247 is about 626.1801675646.

The spelling of 245526247 in words is "two hundred forty-five million, five hundred twenty-six thousand, two hundred forty-seven".