2621371 has 2 divisors, whose sum is σ = 2621372. Its totient is φ = 2621370.

The previous prime is 2621369. The next prime is 2621387. The reversal of 2621371 is 1731262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2621371 - 2¹ = 2621369 is a prime.

Together with 2621369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2621351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310685 + 1310686.

It is an arithmetic number, because the mean of its divisors is an integer number (1310686).

2^2621371 is an apocalyptic number.

2621371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621371 is an equidigital number, since it uses as much as digits as its factorization.

2621371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 2621371 is about 1619.0648535497. The cubic root of 2621371 is about 137.8826103859.

It can be divided in two parts, 2621 and 371, that added together give a palindrome (2992).

The spelling of 2621371 in words is "two million, six hundred twenty-one thousand, three hundred seventy-one".