2641549 has 2 divisors, whose sum is σ = 2641550. Its totient is φ = 2641548.

The previous prime is 2641547. The next prime is 2641553. The reversal of 2641549 is 9451462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 1225449 = 1190^2 + 1107^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641549 - 2¹ = 2641547 is a prime.

It is a super-2 number, since 2×2641549² = 13955562238802, which contains 22 as substring.

Together with 2641547, it forms a pair of twin primes.

2641549 is a lucky number.

It is equal to p₁₉₂₆₇₆ and since 2641549 and 192676 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2641549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2641543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320774 + 1320775.

It is an arithmetic number, because the mean of its divisors is an integer number (1320775).

2^2641549 is an apocalyptic number.

It is an amenable number.

2641549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641549 is an equidigital number, since it uses as much as digits as its factorization.

2641549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 2641549 is about 1625.2842828256. The cubic root of 2641549 is about 138.2354902384.

The spelling of 2641549 in words is "two million, six hundred forty-one thousand, five hundred forty-nine".