49653221 has 2 divisors, whose sum is σ = 49653222. Its totient is φ = 49653220.

The previous prime is 49653203. The next prime is 49653281. The reversal of 49653221 is 12235694.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 4950625 = 6686^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 49653221 - 2⁶ = 49653157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49653281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24826610 + 24826611.

It is an arithmetic number, because the mean of its divisors is an integer number (24826611).

Almost surely, 2^49653221 is an apocalyptic number.

It is an amenable number.

49653221 is a deficient number, since it is larger than the sum of its proper divisors (1).

49653221 is an equidigital number, since it uses as much as digits as its factorization.

49653221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 49653221 is about 7046.5041687350. The cubic root of 49653221 is about 367.5494767329.

The spelling of 49653221 in words is "forty-nine million, six hundred fifty-three thousand, two hundred twenty-one".