2471275021 has 2 divisors, whose sum is σ = 2471275022. Its totient is φ = 2471275020.

The previous prime is 2471274977. The next prime is 2471275063. The reversal of 2471275021 is 1205721742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2277675625 + 193599396 = 47725^2 + 13914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2471275021 - 2²⁷ = 2337057293 is a prime.

It is a super-2 number, since 2×2471275021² = 12214400458837100882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2471275321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1235637510 + 1235637511.

It is an arithmetic number, because the mean of its divisors is an integer number (1235637511).

Almost surely, 2^2471275021 is an apocalyptic number.

It is an amenable number.

2471275021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2471275021 is an equidigital number, since it uses as much as digits as its factorization.

2471275021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 2471275021 is about 49711.9203109274. The cubic root of 2471275021 is about 1351.9906655650.

Adding to 2471275021 its reverse (1205721742), we get a palindrome (3676996763).

The spelling of 2471275021 in words is "two billion, four hundred seventy-one million, two hundred seventy-five thousand, twenty-one".