49449221 has 2 divisors, whose sum is σ = 49449222. Its totient is φ = 49449220.

The previous prime is 49449203. The next prime is 49449227. The reversal of 49449221 is 12294494.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49350625 + 98596 = 7025^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 49449221 - 2¹⁰ = 49448197 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 (49449227) 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, 24724610 + 24724611.

It is an arithmetic number, because the mean of its divisors is an integer number (24724611).

Almost surely, 2^49449221 is an apocalyptic number.

It is an amenable number.

49449221 is a deficient number, since it is larger than the sum of its proper divisors (1).

49449221 is an equidigital number, since it uses as much as digits as its factorization.

49449221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 49449221 is about 7032.0140073808. The cubic root of 49449221 is about 367.0454274361.

The spelling of 49449221 in words is "forty-nine million, four hundred forty-nine thousand, two hundred twenty-one".