52543617631 has 4 divisors (see below), whose sum is σ = 52564832712. Its totient is φ = 52522402552.

The previous prime is 52543617619. The next prime is 52543617653. The reversal of 52543617631 is 13671634525.

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 52543617631 - 2¹¹ = 52543615583 is a prime.

It is a super-2 number, since 2×52543617631² (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 (52543617131) 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, 10603825 + ... + 10608778.

It is an arithmetic number, because the mean of its divisors is an integer number (13141208178).

Almost surely, 2^52543617631 is an apocalyptic number.

52543617631 is a deficient number, since it is larger than the sum of its proper divisors (21215081).

52543617631 is a wasteful number, since it uses less digits than its factorization.

52543617631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21215080.

The product of its digits is 453600, while the sum is 43.

The spelling of 52543617631 in words is "fifty-two billion, five hundred forty-three million, six hundred seventeen thousand, six hundred thirty-one".