247401197 has 2 divisors, whose sum is σ = 247401198. Its totient is φ = 247401196.

The previous prime is 247401163. The next prime is 247401199. The reversal of 247401197 is 791104742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162282121 + 85119076 = 12739^2 + 9226^2 .

It is a cyclic number.

It is not a de Polignac number, because 247401197 - 2¹⁰ = 247400173 is a prime.

It is a super-2 number, since 2×247401197² = 122414704554065618, which contains 22 as substring.

Together with 247401199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247401199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123700598 + 123700599.

It is an arithmetic number, because the mean of its divisors is an integer number (123700599).

Almost surely, 2^247401197 is an apocalyptic number.

247401197 is the 8408-th centered heptagonal number.

It is an amenable number.

247401197 is a deficient number, since it is larger than the sum of its proper divisors (1).

247401197 is an equidigital number, since it uses as much as digits as its factorization.

247401197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 247401197 is about 15728.9922436245. The cubic root of 247401197 is about 627.7700594683.

The spelling of 247401197 in words is "two hundred forty-seven million, four hundred one thousand, one hundred ninety-seven".