2621147 has 2 divisors, whose sum is σ = 2621148. Its totient is φ = 2621146.

The previous prime is 2621137. The next prime is 2621159. The reversal of 2621147 is 7411262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2621147 - 2⁴ = 2621131 is a prime.

It is a Chen prime.

It is equal to p₁₉₁₂₉₁ and since 2621147 and 191291 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 8.

It is not a weakly prime, because it can be changed into another prime (2621137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310573 + 1310574.

It is an arithmetic number, because the mean of its divisors is an integer number (1310574).

2^2621147 is an apocalyptic number.

2621147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621147 is an equidigital number, since it uses as much as digits as its factorization.

2621147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 2621147 is about 1618.9956763376. The cubic root of 2621147 is about 137.8786828502.

The spelling of 2621147 in words is "two million, six hundred twenty-one thousand, one hundred forty-seven".