40221055 has 16 divisors (see below), whose sum is σ = 55264320. Its totient is φ = 27528192.

The previous prime is 40221047. The next prime is 40221059. The reversal of 40221055 is 55012204.

It is a cyclic number.

It is not a de Polignac number, because 40221055 - 2³ = 40221047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221059) 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 in 15 ways as a sum of consecutive naturals, for example, 31897 + ... + 33133.

It is an arithmetic number, because the mean of its divisors is an integer number (3454020).

Almost surely, 2^40221055 is an apocalyptic number.

40221055 is a deficient number, since it is larger than the sum of its proper divisors (15043265).

40221055 is a wasteful number, since it uses less digits than its factorization.

40221055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40221055 is about 6342.0071743889. The cubic root of 40221055 is about 342.6240302386.

Adding to 40221055 its reverse (55012204), we get a palindrome (95233259).

The spelling of 40221055 in words is "forty million, two hundred twenty-one thousand, fifty-five".