519990971 has 2 divisors, whose sum is σ = 519990972. Its totient is φ = 519990970.

The previous prime is 519990847. The next prime is 519990979. The reversal of 519990971 is 179099915.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-519990971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (519990979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259995485 + 259995486.

It is an arithmetic number, because the mean of its divisors is an integer number (259995486).

Almost surely, 2^519990971 is an apocalyptic number.

519990971 is a deficient number, since it is larger than the sum of its proper divisors (1).

519990971 is an equidigital number, since it uses as much as digits as its factorization.

519990971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 229635, while the sum is 50.

The square root of 519990971 is about 22803.3105272020. The cubic root of 519990971 is about 804.1404974431.

The spelling of 519990971 in words is "five hundred nineteen million, nine hundred ninety thousand, nine hundred seventy-one".