2671021 has 2 divisors, whose sum is σ = 2671022. Its totient is φ = 2671020.

The previous prime is 2670973. The next prime is 2671033. The reversal of 2671021 is 1201762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2368521 + 302500 = 1539^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2671021 - 2¹⁵ = 2638253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2671021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2671121) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335510 + 1335511.

It is an arithmetic number, because the mean of its divisors is an integer number (1335511).

2^2671021 is an apocalyptic number.

It is an amenable number.

2671021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2671021 is an equidigital number, since it uses as much as digits as its factorization.

2671021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2671021 is about 1634.3258549016. The cubic root of 2671021 is about 138.7476919779.

Adding to 2671021 its reverse (1201762), we get a palindrome (3872783).

The spelling of 2671021 in words is "two million, six hundred seventy-one thousand, twenty-one".