521107 has 2 divisors, whose sum is σ = 521108. Its totient is φ = 521106.

The previous prime is 521063. The next prime is 521119. The reversal of 521107 is 701125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521107 - 2¹⁵ = 488339 is a prime.

It is not a weakly prime, because it can be changed into another prime (521137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260553 + 260554.

It is an arithmetic number, because the mean of its divisors is an integer number (260554).

2⁵²¹¹⁰⁷ is an apocalyptic number.

521107 is a deficient number, since it is larger than the sum of its proper divisors (1).

521107 is an equidigital number, since it uses as much as digits as its factorization.

521107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 521107 is about 721.8774134159. The cubic root of 521107 is about 80.4715381037.

It can be divided in two parts, 5 and 21107, that added together give a palindrome (21112).

The spelling of 521107 in words is "five hundred twenty-one thousand, one hundred seven".