227045521 has 4 divisors (see below), whose sum is σ = 227520000. Its totient is φ = 226571044.

The previous prime is 227045509. The next prime is 227045527. The reversal of 227045521 is 125540722.

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, and also an emirpimes, since its reverse is a distinct semiprime: 125540722 = 2 ⋅62770361.

It is a cyclic number.

It is not a de Polignac number, because 227045521 - 2⁹ = 227045009 is a prime.

It is a super-2 number, since 2×227045521² = 103099337212322882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 227045521.

It is not an unprimeable number, because it can be changed into a prime (227045527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236521 + ... + 237478.

It is an arithmetic number, because the mean of its divisors is an integer number (56880000).

Almost surely, 2^227045521 is an apocalyptic number.

It is an amenable number.

227045521 is a deficient number, since it is larger than the sum of its proper divisors (474479).

227045521 is an equidigital number, since it uses as much as digits as its factorization.

227045521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474478.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 227045521 is about 15068.0297650356. The cubic root of 227045521 is about 610.0577935030.

The spelling of 227045521 in words is "two hundred twenty-seven million, forty-five thousand, five hundred twenty-one".