64043155 has 16 divisors (see below), whose sum is σ = 87485184. Its totient is φ = 44550880.

The previous prime is 64043153. The next prime is 64043173. The reversal of 64043155 is 55134046.

64043155 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 64043155 - 2¹ = 64043153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64043153) 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, 24049 + ... + 26578.

It is an arithmetic number, because the mean of its divisors is an integer number (5467824).

Almost surely, 2^64043155 is an apocalyptic number.

64043155 is a deficient number, since it is larger than the sum of its proper divisors (23442029).

64043155 is a wasteful number, since it uses less digits than its factorization.

64043155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50666.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 64043155 is about 8002.6967329770. The cubic root of 64043155 is about 400.0898860497.

It can be divided in two parts, 6404 and 3155, that added together give a palindrome (9559).

The spelling of 64043155 in words is "sixty-four million, forty-three thousand, one hundred fifty-five".