521261227 has 2 divisors, whose sum is σ = 521261228. Its totient is φ = 521261226.

The previous prime is 521261189. The next prime is 521261231. The reversal of 521261227 is 722162125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521261227 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 521261195 and 521261204.

It is not a weakly prime, because it can be changed into another prime (521201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260630613 + 260630614.

It is an arithmetic number, because the mean of its divisors is an integer number (260630614).

Almost surely, 2^521261227 is an apocalyptic number.

521261227 is a deficient number, since it is larger than the sum of its proper divisors (1).

521261227 is an equidigital number, since it uses as much as digits as its factorization.

521261227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 521261227 is about 22831.1459852544. The cubic root of 521261227 is about 804.7947611495.

The spelling of 521261227 in words is "five hundred twenty-one million, two hundred sixty-one thousand, two hundred twenty-seven".