247422401 has 2 divisors, whose sum is σ = 247422402. Its totient is φ = 247422400.

The previous prime is 247422361. The next prime is 247422443. The reversal of 247422401 is 104224742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245862400 + 1560001 = 15680^2 + 1249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247422401 is a prime.

It is a super-2 number, since 2×247422401² = 122435689033209602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (247422481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123711200 + 123711201.

It is an arithmetic number, because the mean of its divisors is an integer number (123711201).

Almost surely, 2^247422401 is an apocalyptic number.

It is an amenable number.

247422401 is a deficient number, since it is larger than the sum of its proper divisors (1).

247422401 is an equidigital number, since it uses as much as digits as its factorization.

247422401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 247422401 is about 15729.6662710942. Note that the first 3 decimals coincide. The cubic root of 247422401 is about 627.7879937066.

The spelling of 247422401 in words is "two hundred forty-seven million, four hundred twenty-two thousand, four hundred one".