2449256221 has 16 divisors (see below), whose sum is σ = 2557513728. Its totient is φ = 2343726000.

The previous prime is 2449256207. The next prime is 2449256231. The reversal of 2449256221 is 1226529442.

It is a cyclic number.

It is not a de Polignac number, because 2449256221 - 2¹¹ = 2449254173 is a prime.

It is a super-2 number, since 2×2449256221² = 11997712072214401682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2449256231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548046 + ... + 552496.

It is an arithmetic number, because the mean of its divisors is an integer number (159844608).

Almost surely, 2^2449256221 is an apocalyptic number.

It is an amenable number.

2449256221 is a deficient number, since it is larger than the sum of its proper divisors (108257507).

2449256221 is a wasteful number, since it uses less digits than its factorization.

2449256221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752.

The product of its digits is 69120, while the sum is 37.

The square root of 2449256221 is about 49489.9608102492. The cubic root of 2449256221 is about 1347.9633159060.

The spelling of 2449256221 in words is "two billion, four hundred forty-nine million, two hundred fifty-six thousand, two hundred twenty-one".