520377631 has 2 divisors, whose sum is σ = 520377632. Its totient is φ = 520377630.

The previous prime is 520377619. The next prime is 520377679. The reversal of 520377631 is 136773025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520377631 - 2¹⁵ = 520344863 is a prime.

It is a super-2 number, since 2×520377631² = 541585757690344322, which contains 22 as substring.

It is equal to p_27371374 and since 520377631 and 27371374 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520377331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260188815 + 260188816.

It is an arithmetic number, because the mean of its divisors is an integer number (260188816).

Almost surely, 2^520377631 is an apocalyptic number.

520377631 is a deficient number, since it is larger than the sum of its proper divisors (1).

520377631 is an equidigital number, since it uses as much as digits as its factorization.

520377631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 520377631 is about 22811.7871066692. The cubic root of 520377631 is about 804.3397649599.

The spelling of 520377631 in words is "five hundred twenty million, three hundred seventy-seven thousand, six hundred thirty-one".