4055521 has 4 divisors (see below), whose sum is σ = 4231872. Its totient is φ = 3879172.

The previous prime is 4055497. The next prime is 4055539. The reversal of 4055521 is 1255504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4055521 - 2⁷ = 4055393 is a prime.

It is a Duffinian number.

4055521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4055492 and 4055501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4055551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88141 + ... + 88186.

It is an arithmetic number, because the mean of its divisors is an integer number (1057968).

Almost surely, 2^4055521 is an apocalyptic number.

It is an amenable number.

4055521 is a deficient number, since it is larger than the sum of its proper divisors (176351).

4055521 is a wasteful number, since it uses less digits than its factorization.

4055521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176350.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4055521 is about 2013.8324160664. The cubic root of 4055521 is about 159.4711838221.

The spelling of 4055521 in words is "four million, fifty-five thousand, five hundred twenty-one".