52571352157 has 4 divisors (see below), whose sum is σ = 53291507740. Its totient is φ = 51851196576.

The previous prime is 52571352133. The next prime is 52571352161. The reversal of 52571352157 is 75125317525.

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 14846447716 + 37724904441 = 121846^2 + 194229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52571352157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52571352257) 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, 360077682 + ... + 360077827.

It is an arithmetic number, because the mean of its divisors is an integer number (13322876935).

Almost surely, 2^52571352157 is an apocalyptic number.

It is an amenable number.

52571352157 is a deficient number, since it is larger than the sum of its proper divisors (720155583).

52571352157 is an equidigital number, since it uses as much as digits as its factorization.

52571352157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720155582.

The product of its digits is 367500, while the sum is 43.

The spelling of 52571352157 in words is "fifty-two billion, five hundred seventy-one million, three hundred fifty-two thousand, one hundred fifty-seven".