40555144 has 24 divisors (see below), whose sum is σ = 88456590. Its totient is φ = 17380608.

The previous prime is 40555133. The next prime is 40555147. The reversal of 40555144 is 44155504.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 3467044 = 6090^2 + 1862^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (40555147) 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 5 ways as a sum of consecutive naturals, for example, 51337 + ... + 52120.

Almost surely, 2^40555144 is an apocalyptic number.

It is an amenable number.

40555144 is an abundant number, since it is smaller than the sum of its proper divisors (47901446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40555144 is a wasteful number, since it uses less digits than its factorization.

40555144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103477 (or 103466 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 40555144 is about 6368.2920787288. The cubic root of 40555144 is about 343.5700641100.

The spelling of 40555144 in words is "forty million, five hundred fifty-five thousand, one hundred forty-four".