4055557 has 10 divisors (see below), whose sum is σ = 4477190. Its totient is φ = 3673560.

The previous prime is 4055551. The next prime is 4055561. The reversal of 4055557 is 7555504.

4055557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2869636 + 1185921 = 1694^2 + 1089^2 .

It is not a de Polignac number, because 4055557 - 2³ = 4055549 is a prime.

It is a Duffinian number.

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 (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14503 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (447719).

Almost surely, 2^4055557 is an apocalyptic number.

It is an amenable number.

4055557 is a deficient number, since it is larger than the sum of its proper divisors (421633).

4055557 is an frugal number, since it uses more digits than its factorization.

4055557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 4055557 is about 2013.8413542283. The cubic root of 4055557 is about 159.4716556847.

The spelling of 4055557 in words is "four million, fifty-five thousand, five hundred fifty-seven".