40255155 has 12 divisors (see below), whose sum is σ = 69775680. Its totient is φ = 21469392.

The previous prime is 40255151. The next prime is 40255157. The reversal of 40255155 is 55155204.

It is not a de Polignac number, because 40255155 - 2² = 40255151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40255151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 447235 + ... + 447324.

It is an arithmetic number, because the mean of its divisors is an integer number (5814640).

Almost surely, 2^40255155 is an apocalyptic number.

40255155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40255155 is a deficient number, since it is larger than the sum of its proper divisors (29520525).

40255155 is a wasteful number, since it uses less digits than its factorization.

40255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894570 (or 894567 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 40255155 is about 6344.6950281318. The cubic root of 40255155 is about 342.7208301127.

It can be divided in two parts, 4025 and 5155, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 40255155 in words is "forty million, two hundred fifty-five thousand, one hundred fifty-five".