227481409 has 2 divisors, whose sum is σ = 227481410. Its totient is φ = 227481408.

The previous prime is 227481389. The next prime is 227481461. The reversal of 227481409 is 904184722.

227481409 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., 161417025 + 66064384 = 12705^2 + 8128^2 .

It is a cyclic number.

It is not a de Polignac number, because 227481409 - 2⁵ = 227481377 is a prime.

It is not a weakly prime, because it can be changed into another prime (227481479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113740704 + 113740705.

It is an arithmetic number, because the mean of its divisors is an integer number (113740705).

Almost surely, 2^227481409 is an apocalyptic number.

It is an amenable number.

227481409 is a deficient number, since it is larger than the sum of its proper divisors (1).

227481409 is an equidigital number, since it uses as much as digits as its factorization.

227481409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 227481409 is about 15082.4868307584. The cubic root of 227481409 is about 610.4479456337.

It can be divided in two parts, 227 and 481409, that added together give a square (481636 = 694²).

The spelling of 227481409 in words is "two hundred twenty-seven million, four hundred eighty-one thousand, four hundred nine".