2449587221 has 2 divisors, whose sum is σ = 2449587222. Its totient is φ = 2449587220.

The previous prime is 2449587143. The next prime is 2449587227. The reversal of 2449587221 is 1227859442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2326132900 + 123454321 = 48230^2 + 11111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2449587221 - 2³⁰ = 1375845397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2449587227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1224793610 + 1224793611.

It is an arithmetic number, because the mean of its divisors is an integer number (1224793611).

Almost surely, 2^2449587221 is an apocalyptic number.

It is an amenable number.

2449587221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2449587221 is an equidigital number, since it uses as much as digits as its factorization.

2449587221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 2449587221 is about 49493.3048098427. The cubic root of 2449587221 is about 1348.0240358034.

The spelling of 2449587221 in words is "two billion, four hundred forty-nine million, five hundred eighty-seven thousand, two hundred twenty-one".