520161377 has 2 divisors, whose sum is σ = 520161378. Its totient is φ = 520161376.

The previous prime is 520161329. The next prime is 520161379. The reversal of 520161377 is 773161025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371101696 + 149059681 = 19264^2 + 12209^2 .

It is a cyclic number.

It is not a de Polignac number, because 520161377 - 2¹⁰ = 520160353 is a prime.

It is a super-2 number, since 2×520161377² = 541135716245072258, which contains 22 as substring.

Together with 520161379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520161379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260080688 + 260080689.

It is an arithmetic number, because the mean of its divisors is an integer number (260080689).

Almost surely, 2^520161377 is an apocalyptic number.

It is an amenable number.

520161377 is a deficient number, since it is larger than the sum of its proper divisors (1).

520161377 is an equidigital number, since it uses as much as digits as its factorization.

520161377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 520161377 is about 22807.0466522959. The cubic root of 520161377 is about 804.2283293525.

The spelling of 520161377 in words is "five hundred twenty million, one hundred sixty-one thousand, three hundred seventy-seven".