2287455221 has 2 divisors, whose sum is σ = 2287455222. Its totient is φ = 2287455220.

The previous prime is 2287455217. The next prime is 2287455223. The reversal of 2287455221 is 1225547822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1377226321 + 910228900 = 37111^2 + 30170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2287455221 - 2² = 2287455217 is a prime.

Together with 2287455223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2287455223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143727610 + 1143727611.

It is an arithmetic number, because the mean of its divisors is an integer number (1143727611).

Almost surely, 2^2287455221 is an apocalyptic number.

It is an amenable number.

2287455221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287455221 is an equidigital number, since it uses as much as digits as its factorization.

2287455221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 38.

The square root of 2287455221 is about 47827.3480448164. The cubic root of 2287455221 is about 1317.6018634448.

The spelling of 2287455221 in words is "two billion, two hundred eighty-seven million, four hundred fifty-five thousand, two hundred twenty-one".