521055227 has 8 divisors (see below), whose sum is σ = 649627392. Its totient is φ = 406017000.

The previous prime is 521055193. The next prime is 521055277. The reversal of 521055227 is 722550125.

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

It is a cyclic number.

It is not a de Polignac number, because 521055227 - 2⁶ = 521055163 is a prime.

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 521055227.

It is not an unprimeable number, because it can be changed into a prime (521055277) 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, 3383399 + ... + 3383552.

It is an arithmetic number, because the mean of its divisors is an integer number (81203424).

Almost surely, 2^521055227 is an apocalyptic number.

521055227 is a deficient number, since it is larger than the sum of its proper divisors (128572165).

521055227 is a wasteful number, since it uses less digits than its factorization.

521055227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6766969.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 521055227 is about 22826.6341583686. The cubic root of 521055227 is about 804.6887301382.

The spelling of 521055227 in words is "five hundred twenty-one million, fifty-five thousand, two hundred twenty-seven".