521254271 has 2 divisors, whose sum is σ = 521254272. Its totient is φ = 521254270.

The previous prime is 521254259. The next prime is 521254297. The reversal of 521254271 is 172452125.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521254271 is a prime.

It is a Chen prime.

It is equal to p_27414920 and since 521254271 and 27414920 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521254231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260627135 + 260627136.

It is an arithmetic number, because the mean of its divisors is an integer number (260627136).

Almost surely, 2^521254271 is an apocalyptic number.

521254271 is a deficient number, since it is larger than the sum of its proper divisors (1).

521254271 is an equidigital number, since it uses as much as digits as its factorization.

521254271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 29.

The square root of 521254271 is about 22830.9936489851. The cubic root of 521254271 is about 804.7911812571.

The spelling of 521254271 in words is "five hundred twenty-one million, two hundred fifty-four thousand, two hundred seventy-one".