40077155 has 16 divisors (see below), whose sum is σ = 50353920. Its totient is φ = 30563808.

The previous prime is 40077151. The next prime is 40077173. The reversal of 40077155 is 55177004.

40077155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40077155 - 2² = 40077151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40077151) 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 15 ways as a sum of consecutive naturals, for example, 64436 + ... + 65054.

It is an arithmetic number, because the mean of its divisors is an integer number (3147120).

Almost surely, 2^40077155 is an apocalyptic number.

40077155 is a deficient number, since it is larger than the sum of its proper divisors (10276765).

40077155 is a wasteful number, since it uses less digits than its factorization.

40077155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 40077155 is about 6330.6520201319. The cubic root of 40077155 is about 342.2149367643.

The spelling of 40077155 in words is "forty million, seventy-seven thousand, one hundred fifty-five".