4055549 has 2 divisors, whose sum is σ = 4055550. Its totient is φ = 4055548.

The previous prime is 4055543. The next prime is 4055551. The reversal of 4055549 is 9455504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2805625 + 1249924 = 1675^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 4055549 - 2²⁰ = 3006973 is a prime.

Together with 4055551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4055543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027774 + 2027775.

It is an arithmetic number, because the mean of its divisors is an integer number (2027775).

Almost surely, 2^4055549 is an apocalyptic number.

It is an amenable number.

4055549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4055549 is an equidigital number, since it uses as much as digits as its factorization.

4055549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 4055549 is about 2013.8393679735. The cubic root of 4055549 is about 159.4715508266.

It can be divided in two parts, 40555 and 49, that added together give a palindrome (40604).

The spelling of 4055549 in words is "four million, fifty-five thousand, five hundred forty-nine".