49628221 has 2 divisors, whose sum is σ = 49628222. Its totient is φ = 49628220.

The previous prime is 49628203. The next prime is 49628233. The reversal of 49628221 is 12282694.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31472100 + 18156121 = 5610^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 49628221 - 2⁷ = 49628093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49628021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24814110 + 24814111.

It is an arithmetic number, because the mean of its divisors is an integer number (24814111).

Almost surely, 2^49628221 is an apocalyptic number.

It is an amenable number.

49628221 is a deficient number, since it is larger than the sum of its proper divisors (1).

49628221 is an equidigital number, since it uses as much as digits as its factorization.

49628221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 49628221 is about 7044.7300161184. The cubic root of 49628221 is about 367.4877803023.

The spelling of 49628221 in words is "forty-nine million, six hundred twenty-eight thousand, two hundred twenty-one".