2228521487 has 2 divisors, whose sum is σ = 2228521488. Its totient is φ = 2228521486.

The previous prime is 2228521447. The next prime is 2228521489. The reversal of 2228521487 is 7841258222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2228521487 - 2⁶ = 2228521423 is a prime.

Together with 2228521489, 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 (2228521489) 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 as a sum of consecutive naturals, namely, 1114260743 + 1114260744.

It is an arithmetic number, because the mean of its divisors is an integer number (1114260744).

Almost surely, 2^2228521487 is an apocalyptic number.

2228521487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2228521487 is an equidigital number, since it uses as much as digits as its factorization.

2228521487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 143360, while the sum is 41.

The square root of 2228521487 is about 47207.2185899572. The cubic root of 2228521487 is about 1306.1877565268.

The spelling of 2228521487 in words is "two billion, two hundred twenty-eight million, five hundred twenty-one thousand, four hundred eighty-seven".