45266821 has 2 divisors, whose sum is σ = 45266822. Its totient is φ = 45266820.

The previous prime is 45266813. The next prime is 45266827. The reversal of 45266821 is 12866254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43046721 + 2220100 = 6561^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 45266821 - 2³ = 45266813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45266827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22633410 + 22633411.

It is an arithmetic number, because the mean of its divisors is an integer number (22633411).

Almost surely, 2^45266821 is an apocalyptic number.

It is an amenable number.

45266821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45266821 is an equidigital number, since it uses as much as digits as its factorization.

45266821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 45266821 is about 6728.0622024473. The cubic root of 45266821 is about 356.3909483926.

The spelling of 45266821 in words is "forty-five million, two hundred sixty-six thousand, eight hundred twenty-one".