45019771 has 4 divisors (see below), whose sum is σ = 45041344. Its totient is φ = 44998200.

The previous prime is 45019747. The next prime is 45019789. The reversal of 45019771 is 17791054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17791054 = 2 ⋅8895527.

It is a cyclic number.

It is not a de Polignac number, because 45019771 - 2⁵ = 45019739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45014771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7275 + ... + 11956.

It is an arithmetic number, because the mean of its divisors is an integer number (11260336).

Almost surely, 2^45019771 is an apocalyptic number.

45019771 is a deficient number, since it is larger than the sum of its proper divisors (21573).

45019771 is a wasteful number, since it uses less digits than its factorization.

45019771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 45019771 is about 6709.6774140043. The cubic root of 45019771 is about 355.7414141831.

The spelling of 45019771 in words is "forty-five million, nineteen thousand, seven hundred seventy-one".