521714477 has 2 divisors, whose sum is σ = 521714478. Its totient is φ = 521714476.

The previous prime is 521714449. The next prime is 521714489. The reversal of 521714477 is 774417125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514881481 + 6832996 = 22691^2 + 2614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521714477 is a prime.

It is a super-2 number, since 2×521714477² = 544371991022767058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 521714477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521714077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260857238 + 260857239.

It is an arithmetic number, because the mean of its divisors is an integer number (260857239).

Almost surely, 2^521714477 is an apocalyptic number.

It is an amenable number.

521714477 is a deficient number, since it is larger than the sum of its proper divisors (1).

521714477 is an equidigital number, since it uses as much as digits as its factorization.

521714477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54880, while the sum is 38.

The square root of 521714477 is about 22841.0699618035. The cubic root of 521714477 is about 805.0279567982.

The spelling of 521714477 in words is "five hundred twenty-one million, seven hundred fourteen thousand, four hundred seventy-seven".