227028491 has 2 divisors, whose sum is σ = 227028492. Its totient is φ = 227028490.

The previous prime is 227028479. The next prime is 227028493. The reversal of 227028491 is 194820722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227028491 is a prime.

Together with 227028493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (227028493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113514245 + 113514246.

It is an arithmetic number, because the mean of its divisors is an integer number (113514246).

Almost surely, 2^227028491 is an apocalyptic number.

227028491 is a deficient number, since it is larger than the sum of its proper divisors (1).

227028491 is an equidigital number, since it uses as much as digits as its factorization.

227028491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 227028491 is about 15067.4646506969. The cubic root of 227028491 is about 610.0425402564.

The spelling of 227028491 in words is "two hundred twenty-seven million, twenty-eight thousand, four hundred ninety-one".