45221651 has 2 divisors, whose sum is σ = 45221652. Its totient is φ = 45221650.

The previous prime is 45221629. The next prime is 45221663. The reversal of 45221651 is 15612254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45221651 - 2¹⁴ = 45205267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45221651.

It is not a weakly prime, because it can be changed into another prime (45221621) 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, 22610825 + 22610826.

It is an arithmetic number, because the mean of its divisors is an integer number (22610826).

Almost surely, 2^45221651 is an apocalyptic number.

45221651 is a deficient number, since it is larger than the sum of its proper divisors (1).

45221651 is an equidigital number, since it uses as much as digits as its factorization.

45221651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 45221651 is about 6724.7045288250. The cubic root of 45221651 is about 356.2723660524.

The spelling of 45221651 in words is "forty-five million, two hundred twenty-one thousand, six hundred fifty-one".