52021501313 has 4 divisors (see below), whose sum is σ = 52032359748. Its totient is φ = 52010642880.

The previous prime is 52021501297. The next prime is 52021501331. The reversal of 52021501313 is 31310512025.

It is a happy number.

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 21918210304 + 30103291009 = 148048^2 + 173503^2 .

It is a cyclic number.

It is not a de Polignac number, because 52021501313 - 2⁴ = 52021501297 is a prime.

It is a super-4 number, since 4×52021501313⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52021509313) 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, 5422028 + ... + 5431613.

It is an arithmetic number, because the mean of its divisors is an integer number (13008089937).

Almost surely, 2^52021501313 is an apocalyptic number.

It is an amenable number.

52021501313 is a deficient number, since it is larger than the sum of its proper divisors (10858435).

52021501313 is a wasteful number, since it uses less digits than its factorization.

52021501313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10858434.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 52021501313 in words is "fifty-two billion, twenty-one million, five hundred one thousand, three hundred thirteen".