40505055 has 16 divisors (see below), whose sum is σ = 68219520. Its totient is φ = 20465568.

The previous prime is 40505053. The next prime is 40505077. The reversal of 40505055 is 55050504.

It is not a de Polignac number, because 40505055 - 2¹ = 40505053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40505053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70777 + ... + 71346.

It is an arithmetic number, because the mean of its divisors is an integer number (4263720).

Almost surely, 2^40505055 is an apocalyptic number.

40505055 is a deficient number, since it is larger than the sum of its proper divisors (27714465).

40505055 is a wasteful number, since it uses less digits than its factorization.

40505055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142150.

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 40505055 is about 6364.3581765957. The cubic root of 40505055 is about 343.4285599012.

Adding to 40505055 its reverse (55050504), we get a palindrome (95555559).

The spelling of 40505055 in words is "forty million, five hundred five thousand, fifty-five".