2245526221 has 4 divisors (see below), whose sum is σ = 2247378652. Its totient is φ = 2243673792.

The previous prime is 2245526197. The next prime is 2245526279. The reversal of 2245526221 is 1226255422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 750157321 + 1495368900 = 27389^2 + 38670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245526221 - 2⁷ = 2245526093 is a prime.

It is a super-3 number, since 3×2245526221³ (a number of 29 digits) contains 333 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 (2245526281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924396 + ... + 926821.

It is an arithmetic number, because the mean of its divisors is an integer number (561844663).

Almost surely, 2^2245526221 is an apocalyptic number.

It is an amenable number.

2245526221 is a deficient number, since it is larger than the sum of its proper divisors (1852431).

2245526221 is a wasteful number, since it uses less digits than its factorization.

2245526221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852430.

The product of its digits is 19200, while the sum is 31.

The square root of 2245526221 is about 47386.9836664036. The cubic root of 2245526221 is about 1309.5016306396.

The spelling of 2245526221 in words is "two billion, two hundred forty-five million, five hundred twenty-six thousand, two hundred twenty-one".