247226197 has 2 divisors, whose sum is σ = 247226198. Its totient is φ = 247226196.

The previous prime is 247226191. The next prime is 247226219. The reversal of 247226197 is 791622742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216855076 + 30371121 = 14726^2 + 5511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247226197 is a prime.

It is a super-2 number, since 2×247226197² = 122241584966165618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247226191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123613098 + 123613099.

It is an arithmetic number, because the mean of its divisors is an integer number (123613099).

Almost surely, 2^247226197 is an apocalyptic number.

It is an amenable number.

247226197 is a deficient number, since it is larger than the sum of its proper divisors (1).

247226197 is an equidigital number, since it uses as much as digits as its factorization.

247226197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 247226197 is about 15723.4282839335. The cubic root of 247226197 is about 627.6220061914.

The spelling of 247226197 in words is "two hundred forty-seven million, two hundred twenty-six thousand, one hundred ninety-seven".