45771649 has 16 divisors (see below), whose sum is σ = 57214080. Its totient is φ = 35573760.

The previous prime is 45771643. The next prime is 45771659. The reversal of 45771649 is 94617754.

45771649 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 45771649 - 2⁷ = 45771521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45771643) 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, 58827 + ... + 59599.

It is an arithmetic number, because the mean of its divisors is an integer number (3575880).

Almost surely, 2^45771649 is an apocalyptic number.

It is an amenable number.

45771649 is a deficient number, since it is larger than the sum of its proper divisors (11442431).

45771649 is a wasteful number, since it uses less digits than its factorization.

45771649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560.

The product of its digits is 211680, while the sum is 43.

The square root of 45771649 is about 6765.4747800875. The cubic root of 45771649 is about 357.7109101537.

It can be divided in two parts, 4577 and 1649, that added together give a palindrome (6226).

The spelling of 45771649 in words is "forty-five million, seven hundred seventy-one thousand, six hundred forty-nine".