40471155 has 48 divisors (see below), whose sum is σ = 73032960. Its totient is φ = 20715264.

The previous prime is 40471139. The next prime is 40471157. The reversal of 40471155 is 55117404.

It is a happy number.

40471155 is a `hidden beast` number, since 40 + 471 + 155 = 666.

40471155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40471155 - 2⁴ = 40471139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40471157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 181374 + ... + 181596.

It is an arithmetic number, because the mean of its divisors is an integer number (1521520).

Almost surely, 2^40471155 is an apocalyptic number.

40471155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40471155 is a deficient number, since it is larger than the sum of its proper divisors (32561805).

40471155 is a wasteful number, since it uses less digits than its factorization.

40471155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 40471155 is about 6361.6943497782. The cubic root of 40471155 is about 343.3327243106.

Adding to 40471155 its reverse (55117404), we get a palindrome (95588559).

The spelling of 40471155 in words is "forty million, four hundred seventy-one thousand, one hundred fifty-five".