45746821 has 2 divisors, whose sum is σ = 45746822. Its totient is φ = 45746820.

The previous prime is 45746819. The next prime is 45746843. The reversal of 45746821 is 12864754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38266596 + 7480225 = 6186^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 45746821 - 2¹ = 45746819 is a prime.

Together with 45746819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45746321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22873410 + 22873411.

It is an arithmetic number, because the mean of its divisors is an integer number (22873411).

Almost surely, 2^45746821 is an apocalyptic number.

It is an amenable number.

45746821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45746821 is an equidigital number, since it uses as much as digits as its factorization.

45746821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 45746821 is about 6763.6396267099. The cubic root of 45746821 is about 357.6462205261.

It can be divided in two parts, 457 and 46821, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 45746821 in words is "forty-five million, seven hundred forty-six thousand, eight hundred twenty-one".