521090005519 has 2 divisors, whose sum is σ = 521090005520. Its totient is φ = 521090005518.

The previous prime is 521090005517. The next prime is 521090005547. The reversal of 521090005519 is 915500090125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521090005519 - 2¹ = 521090005517 is a prime.

It is a super-2 number, since 2×521090005519² (a number of 24 digits) contains 22 as substring.

Together with 521090005517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521090005517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260545002759 + 260545002760.

It is an arithmetic number, because the mean of its divisors is an integer number (260545002760).

Almost surely, 2^521090005519 is an apocalyptic number.

521090005519 is a deficient number, since it is larger than the sum of its proper divisors (1).

521090005519 is an equidigital number, since it uses as much as digits as its factorization.

521090005519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 37.

The spelling of 521090005519 in words is "five hundred twenty-one billion, ninety million, five thousand, five hundred nineteen".