40381055 has 16 divisors (see below), whose sum is σ = 56929824. Its totient is φ = 27108480.

The previous prime is 40381039. The next prime is 40381067. The reversal of 40381055 is 55018304.

It is not a de Polignac number, because 40381055 - 2⁴ = 40381039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27524 + ... + 28953.

It is an arithmetic number, because the mean of its divisors is an integer number (3558114).

Almost surely, 2^40381055 is an apocalyptic number.

40381055 is a deficient number, since it is larger than the sum of its proper divisors (16548769).

40381055 is a wasteful number, since it uses less digits than its factorization.

40381055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56506.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 40381055 is about 6354.6089572845. The cubic root of 40381055 is about 343.0777504245.

Adding to 40381055 its reverse (55018304), we get a palindrome (95399359).

The spelling of 40381055 in words is "forty million, three hundred eighty-one thousand, fifty-five".