52801857013 has 4 divisors (see below), whose sum is σ = 55907848620. Its totient is φ = 49695865408.

The previous prime is 52801856909. The next prime is 52801857037. The reversal of 52801857013 is 31075810825.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14394480529 + 38407376484 = 119977^2 + 195978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52801857013 is a prime.

It is a super-2 number, since 2×52801857013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52801857083) 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, 1552995778 + ... + 1552995811.

It is an arithmetic number, because the mean of its divisors is an integer number (13976962155).

Almost surely, 2^52801857013 is an apocalyptic number.

It is an amenable number.

52801857013 is a deficient number, since it is larger than the sum of its proper divisors (3105991607).

52801857013 is a wasteful number, since it uses less digits than its factorization.

52801857013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105991606.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 52801857013 in words is "fifty-two billion, eight hundred one million, eight hundred fifty-seven thousand, thirteen".