519801427 has 4 divisors (see below), whose sum is σ = 523595736. Its totient is φ = 516007120.

The previous prime is 519801421. The next prime is 519801433. The reversal of 519801427 is 724108915.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (519801421) and next prime (519801433).

It is a cyclic number.

It is not a de Polignac number, because 519801427 - 2¹⁹ = 519277139 is a prime.

It is a super-2 number, since 2×519801427² = 540387047022472658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (519801421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1896949 + ... + 1897222.

It is an arithmetic number, because the mean of its divisors is an integer number (130898934).

Almost surely, 2^519801427 is an apocalyptic number.

519801427 is a deficient number, since it is larger than the sum of its proper divisors (3794309).

519801427 is a wasteful number, since it uses less digits than its factorization.

519801427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794308.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 519801427 is about 22799.1540851848. The cubic root of 519801427 is about 804.0427787400.

The spelling of 519801427 in words is "five hundred nineteen million, eight hundred one thousand, four hundred twenty-seven".