227897421 has 4 divisors (see below), whose sum is σ = 303863232. Its totient is φ = 151931612.

The previous prime is 227897413. The next prime is 227897441. The reversal of 227897421 is 124798722.

227897421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 227897421 - 2³ = 227897413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227897441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37982901 + ... + 37982906.

It is an arithmetic number, because the mean of its divisors is an integer number (75965808).

Almost surely, 2^227897421 is an apocalyptic number.

It is an amenable number.

227897421 is a deficient number, since it is larger than the sum of its proper divisors (75965811).

227897421 is an equidigital number, since it uses as much as digits as its factorization.

227897421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75965810.

The product of its digits is 112896, while the sum is 42.

The square root of 227897421 is about 15096.2717582852. The cubic root of 227897421 is about 610.8198427205.

It can be divided in two parts, 2278 and 97421, that added together give a palindrome (99699).

The spelling of 227897421 in words is "two hundred twenty-seven million, eight hundred ninety-seven thousand, four hundred twenty-one".