45771021 has 16 divisors (see below), whose sum is σ = 71798400. Its totient is φ = 28718784.

The previous prime is 45770999. The next prime is 45771031. The reversal of 45771021 is 12017754.

45771021 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 45771021 - 2⁶ = 45770957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45771031) 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, 49401 + ... + 50318.

It is an arithmetic number, because the mean of its divisors is an integer number (4487400).

Almost surely, 2^45771021 is an apocalyptic number.

It is an amenable number.

45771021 is a deficient number, since it is larger than the sum of its proper divisors (26027379).

45771021 is a wasteful number, since it uses less digits than its factorization.

45771021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99745 (or 99739 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 45771021 is about 6765.4283678123. The cubic root of 45771021 is about 357.7092741812.

Adding to 45771021 its reverse (12017754), we get a palindrome (57788775).

The spelling of 45771021 in words is "forty-five million, seven hundred seventy-one thousand, twenty-one".