52919439851521 has 4 divisors (see below), whose sum is σ = 53013435304752. Its totient is φ = 52825444398292.

The previous prime is 52919439851513. The next prime is 52919439851533. The reversal of 52919439851521 is 12515893491925.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52919439851521 - 2³ = 52919439851513 is a prime.

It is a super-2 number, since 2×52919439851521² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52919439851561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46997725771 + ... + 46997726896.

It is an arithmetic number, because the mean of its divisors is an integer number (13253358826188).

Almost surely, 2^{52919439851521} is an apocalyptic number.

It is an amenable number.

52919439851521 is a deficient number, since it is larger than the sum of its proper divisors (93995453231).

52919439851521 is an equidigital number, since it uses as much as digits as its factorization.

52919439851521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93995453230.

The product of its digits is 34992000, while the sum is 64.

The spelling of 52919439851521 in words is "fifty-two trillion, nine hundred nineteen billion, four hundred thirty-nine million, eight hundred fifty-one thousand, five hundred twenty-one".