520251383 has 2 divisors, whose sum is σ = 520251384. Its totient is φ = 520251382.

The previous prime is 520251349. The next prime is 520251397. The reversal of 520251383 is 383152025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520251383 - 2²² = 516057079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520251313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260125691 + 260125692.

It is an arithmetic number, because the mean of its divisors is an integer number (260125692).

Almost surely, 2^520251383 is an apocalyptic number.

520251383 is a deficient number, since it is larger than the sum of its proper divisors (1).

520251383 is an equidigital number, since it uses as much as digits as its factorization.

520251383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 520251383 is about 22809.0197728881. The cubic root of 520251383 is about 804.2747131631.

The spelling of 520251383 in words is "five hundred twenty million, two hundred fifty-one thousand, three hundred eighty-three".