227752021 has 8 divisors (see below), whose sum is σ = 262338560. Its totient is φ = 193678128.

The previous prime is 227752001. The next prime is 227752027. The reversal of 227752021 is 120257722.

227752021 = 120² + 121² + ... + 881².

227752021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 227752021 - 2⁹ = 227751509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227752027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127206 + ... + 128983.

It is an arithmetic number, because the mean of its divisors is an integer number (32792320).

Almost surely, 2^227752021 is an apocalyptic number.

It is an amenable number.

227752021 is a deficient number, since it is larger than the sum of its proper divisors (34586539).

227752021 is a wasteful number, since it uses less digits than its factorization.

227752021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256323.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 227752021 is about 15091.4552313553. The cubic root of 227752021 is about 610.6899127733.

The spelling of 227752021 in words is "two hundred twenty-seven million, seven hundred fifty-two thousand, twenty-one".