45286821 has 12 divisors (see below), whose sum is σ = 65782080. Its totient is φ = 30021480.

The previous prime is 45286799. The next prime is 45286847. The reversal of 45286821 is 12868254.

It is not a de Polignac number, because 45286821 - 2⁵ = 45286789 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45286321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12445 + ... + 15666.

It is an arithmetic number, because the mean of its divisors is an integer number (5481840).

Almost surely, 2^45286821 is an apocalyptic number.

It is an amenable number.

45286821 is a deficient number, since it is larger than the sum of its proper divisors (20495259).

45286821 is a wasteful number, since it uses less digits than its factorization.

45286821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28296 (or 28293 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 45286821 is about 6729.5483503724. The cubic root of 45286821 is about 356.4434281067.

It can be divided in two parts, 4 and 5286821, that added together give a palindrome (5286825).

The spelling of 45286821 in words is "forty-five million, two hundred eighty-six thousand, eight hundred twenty-one".