227420521 has 2 divisors, whose sum is σ = 227420522. Its totient is φ = 227420520.

The previous prime is 227420503. The next prime is 227420549. The reversal of 227420521 is 125024722.

227420521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150332121 + 77088400 = 12261^2 + 8780^2 .

It is a cyclic number.

It is not a de Polignac number, because 227420521 - 2⁵ = 227420489 is a prime.

It is a super-2 number, since 2×227420521² = 103440186743822882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227420561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113710260 + 113710261.

It is an arithmetic number, because the mean of its divisors is an integer number (113710261).

Almost surely, 2^227420521 is an apocalyptic number.

It is an amenable number.

227420521 is a deficient number, since it is larger than the sum of its proper divisors (1).

227420521 is an equidigital number, since it uses as much as digits as its factorization.

227420521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 227420521 is about 15080.4681956496. The cubic root of 227420521 is about 610.3934763163.

The spelling of 227420521 in words is "two hundred twenty-seven million, four hundred twenty thousand, five hundred twenty-one".