52570081645 has 4 divisors (see below), whose sum is σ = 63084097980. Its totient is φ = 42056065312.

The previous prime is 52570081601. The next prime is 52570081661. The reversal of 52570081645 is 54618007525.

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 14723880964 + 37846200681 = 121342^2 + 194541^2 .

It is a cyclic number.

It is not a de Polignac number, because 52570081645 - 2²¹ = 52567984493 is a prime.

It is a super-3 number, since 3×52570081645³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5257008160 + ... + 5257008169.

It is an arithmetic number, because the mean of its divisors is an integer number (15771024495).

Almost surely, 2^52570081645 is an apocalyptic number.

It is an amenable number.

52570081645 is a deficient number, since it is larger than the sum of its proper divisors (10514016335).

52570081645 is a wasteful number, since it uses less digits than its factorization.

52570081645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10514016334.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 52570081645 in words is "fifty-two billion, five hundred seventy million, eighty-one thousand, six hundred forty-five".