516052323257 has 4 divisors (see below), whose sum is σ = 516053770980. Its totient is φ = 516050875536.

The previous prime is 516052323233. The next prime is 516052323277. The reversal of 516052323257 is 752323250615.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 752323250615 = 5 ⋅150464650123.

It can be written as a sum of positive squares in 2 ways, for example, as 102154387456 + 413897935801 = 319616^2 + 643349^2 .

It is a cyclic number.

It is not a de Polignac number, because 516052323257 - 2³⁰ = 514978581433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516052323277) 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, 228419 + ... + 1041287.

It is an arithmetic number, because the mean of its divisors is an integer number (129013442745).

Almost surely, 2^516052323257 is an apocalyptic number.

It is an amenable number.

516052323257 is a deficient number, since it is larger than the sum of its proper divisors (1447723).

516052323257 is an equidigital number, since it uses as much as digits as its factorization.

516052323257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447722.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 516052323257 in words is "five hundred sixteen billion, fifty-two million, three hundred twenty-three thousand, two hundred fifty-seven".