45221837 has 2 divisors, whose sum is σ = 45221838. Its totient is φ = 45221836.

The previous prime is 45221833. The next prime is 45221863. The reversal of 45221837 is 73812254.

45221837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35772361 + 9449476 = 5981^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 45221837 - 2² = 45221833 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45221831) 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 as a sum of consecutive naturals, namely, 22610918 + 22610919.

It is an arithmetic number, because the mean of its divisors is an integer number (22610919).

Almost surely, 2^45221837 is an apocalyptic number.

It is an amenable number.

45221837 is a deficient number, since it is larger than the sum of its proper divisors (1).

45221837 is an equidigital number, since it uses as much as digits as its factorization.

45221837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 45221837 is about 6724.7183584147. The cubic root of 45221837 is about 356.2728545100.

The spelling of 45221837 in words is "forty-five million, two hundred twenty-one thousand, eight hundred thirty-seven".