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520434139 is a prime number
BaseRepresentation
bin11111000001010…
…011000111011011
31100021021210102111
4133001103013123
52031212343024
6123350413151
715616421461
oct3701230733
91307253374
10520434139
11247853965
121263611b7
1383a8acc4
144d194831
1530a52a94
hex1f0531db

520434139 has 2 divisors, whose sum is σ = 520434140. Its totient is φ = 520434138.

The previous prime is 520434137. The next prime is 520434157. The reversal of 520434139 is 931434025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520434139 - 21 = 520434137 is a prime.

Together with 520434137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 520434139.

It is not a weakly prime, because it can be changed into another prime (520434137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260217069 + 260217070.

It is an arithmetic number, because the mean of its divisors is an integer number (260217070).

Almost surely, 2520434139 is an apocalyptic number.

520434139 is a deficient number, since it is larger than the sum of its proper divisors (1).

520434139 is an equidigital number, since it uses as much as digits as its factorization.

520434139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 520434139 is about 22813.0256432592. The cubic root of 520434139 is about 804.3688784239.

The spelling of 520434139 in words is "five hundred twenty million, four hundred thirty-four thousand, one hundred thirty-nine".