227921797 has 2 divisors, whose sum is σ = 227921798. Its totient is φ = 227921796.

The previous prime is 227921731. The next prime is 227921807. The reversal of 227921797 is 797129722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217592001 + 10329796 = 14751^2 + 3214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227921797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227922797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113960898 + 113960899.

It is an arithmetic number, because the mean of its divisors is an integer number (113960899).

Almost surely, 2^227921797 is an apocalyptic number.

It is an amenable number.

227921797 is a deficient number, since it is larger than the sum of its proper divisors (1).

227921797 is an equidigital number, since it uses as much as digits as its factorization.

227921797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 46.

The square root of 227921797 is about 15097.0790883535. The cubic root of 227921797 is about 610.8416197896.

The spelling of 227921797 in words is "two hundred twenty-seven million, nine hundred twenty-one thousand, seven hundred ninety-seven".