40155255 has 36 divisors (see below), whose sum is σ = 80970552. Its totient is φ = 18355680.

The previous prime is 40155253. The next prime is 40155259. The reversal of 40155255 is 55255104.

40155255 is a `hidden beast` number, since 401 + 5 + 5 + 255 = 666.

It is not a de Polignac number, because 40155255 - 2¹ = 40155253 is a prime.

It is a super-2 number, since 2×40155255² = 3224889008230050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155253) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6901 + ... + 11310.

It is an arithmetic number, because the mean of its divisors is an integer number (2249182).

Almost surely, 2^40155255 is an apocalyptic number.

40155255 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40155255 is an abundant number, since it is smaller than the sum of its proper divisors (40815297).

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

40155255 is a wasteful number, since it uses less digits than its factorization.

40155255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236 (or 18226 counting only the distinct ones).

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

The square root of 40155255 is about 6336.8174188626. The cubic root of 40155255 is about 342.4370886279.

The spelling of 40155255 in words is "forty million, one hundred fifty-five thousand, two hundred fifty-five".