520111477 has 2 divisors, whose sum is σ = 520111478. Its totient is φ = 520111476.

The previous prime is 520111439. The next prime is 520111483. The reversal of 520111477 is 774111025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421029361 + 99082116 = 20519^2 + 9954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520111477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520111177) 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, 260055738 + 260055739.

It is an arithmetic number, because the mean of its divisors is an integer number (260055739).

Almost surely, 2^520111477 is an apocalyptic number.

It is an amenable number.

520111477 is a deficient number, since it is larger than the sum of its proper divisors (1).

520111477 is an equidigital number, since it uses as much as digits as its factorization.

520111477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 520111477 is about 22805.9526659160. The cubic root of 520111477 is about 804.2026115152.

The spelling of 520111477 in words is "five hundred twenty million, one hundred eleven thousand, four hundred seventy-seven".