521267 has 2 divisors, whose sum is σ = 521268. Its totient is φ = 521266.

The previous prime is 521251. The next prime is 521281. The reversal of 521267 is 762125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521267 - 2⁴ = 521251 is a prime.

It is not a weakly prime, because it can be changed into another prime (521167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260633 + 260634.

It is an arithmetic number, because the mean of its divisors is an integer number (260634).

2⁵²¹²⁶⁷ is an apocalyptic number.

521267 is a deficient number, since it is larger than the sum of its proper divisors (1).

521267 is an equidigital number, since it uses as much as digits as its factorization.

521267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 521267 is about 721.9882270508. The cubic root of 521267 is about 80.4797732189.

The spelling of 521267 in words is "five hundred twenty-one thousand, two hundred sixty-seven".