271172021 has 2 divisors, whose sum is σ = 271172022. Its totient is φ = 271172020.

The previous prime is 271172017. The next prime is 271172063. The reversal of 271172021 is 120271172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240591121 + 30580900 = 15511^2 + 5530^2 .

It is a cyclic number.

It is not a de Polignac number, because 271172021 - 2² = 271172017 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 (271172621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135586010 + 135586011.

It is an arithmetic number, because the mean of its divisors is an integer number (135586011).

Almost surely, 2^271172021 is an apocalyptic number.

It is an amenable number.

271172021 is a deficient number, since it is larger than the sum of its proper divisors (1).

271172021 is an equidigital number, since it uses as much as digits as its factorization.

271172021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 271172021 is about 16467.3015700812. The cubic root of 271172021 is about 647.2642580841.

The spelling of 271172021 in words is "two hundred seventy-one million, one hundred seventy-two thousand, twenty-one".