64041555 has 16 divisors (see below), whose sum is σ = 103703040. Its totient is φ = 33743328.

The previous prime is 64041547. The next prime is 64041557. The reversal of 64041555 is 55514046.

64041555 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 64041555 - 2³ = 64041547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64041557) 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, 24475 + ... + 26964.

It is an arithmetic number, because the mean of its divisors is an integer number (6481440).

Almost surely, 2^64041555 is an apocalyptic number.

64041555 is a deficient number, since it is larger than the sum of its proper divisors (39661485).

64041555 is a wasteful number, since it uses less digits than its factorization.

64041555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51530.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 64041555 is about 8002.5967660504. The cubic root of 64041555 is about 400.0865541862.

It can be divided in two parts, 640 and 41555, that added together give a triangular number (42195 = T₂₉₀).

The spelling of 64041555 in words is "sixty-four million, forty-one thousand, five hundred fifty-five".