52131551671 has 4 divisors (see below), whose sum is σ = 55198113552. Its totient is φ = 49064989792.

The previous prime is 52131551653. The next prime is 52131551723. The reversal of 52131551671 is 17615513125.

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

It is a cyclic number.

It is not a de Polignac number, because 52131551671 - 2¹¹ = 52131549623 is a prime.

It is a super-2 number, since 2×52131551671² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52131551671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52131551621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533280915 + ... + 1533280948.

It is an arithmetic number, because the mean of its divisors is an integer number (13799528388).

Almost surely, 2^52131551671 is an apocalyptic number.

52131551671 is a deficient number, since it is larger than the sum of its proper divisors (3066561881).

52131551671 is a wasteful number, since it uses less digits than its factorization.

52131551671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066561880.

The product of its digits is 31500, while the sum is 37.

The spelling of 52131551671 in words is "fifty-two billion, one hundred thirty-one million, five hundred fifty-one thousand, six hundred seventy-one".