520435117 has 2 divisors, whose sum is σ = 520435118. Its totient is φ = 520435116.

The previous prime is 520435057. The next prime is 520435133. The reversal of 520435117 is 711534025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448846596 + 71588521 = 21186^2 + 8461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520435117 is a prime.

It is a super-2 number, since 2×520435117² = 541705422013607378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520435147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260217558 + 260217559.

It is an arithmetic number, because the mean of its divisors is an integer number (260217559).

Almost surely, 2^520435117 is an apocalyptic number.

It is an amenable number.

520435117 is a deficient number, since it is larger than the sum of its proper divisors (1).

520435117 is an equidigital number, since it uses as much as digits as its factorization.

520435117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 520435117 is about 22813.0470783716. The cubic root of 520435117 is about 804.3693822804.

The spelling of 520435117 in words is "five hundred twenty million, four hundred thirty-five thousand, one hundred seventeen".