49643021 has 2 divisors, whose sum is σ = 49643022. Its totient is φ = 49643020.

The previous prime is 49642981. The next prime is 49643053. The reversal of 49643021 is 12034694.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 9066121 = 6370^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 49643021 - 2¹⁴ = 49626637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49643071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24821510 + 24821511.

It is an arithmetic number, because the mean of its divisors is an integer number (24821511).

Almost surely, 2^49643021 is an apocalyptic number.

It is an amenable number.

49643021 is a deficient number, since it is larger than the sum of its proper divisors (1).

49643021 is an equidigital number, since it uses as much as digits as its factorization.

49643021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 49643021 is about 7045.7803684191. The cubic root of 49643021 is about 367.5243070908.

The spelling of 49643021 in words is "forty-nine million, six hundred forty-three thousand, twenty-one".