51532043537 has 8 divisors (see below), whose sum is σ = 55828360896. Its totient is φ = 47283199632.

The previous prime is 51532043533. The next prime is 51532043569. The reversal of 51532043537 is 73534023515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51532043537 - 2² = 51532043533 is a prime.

It is a super-2 number, since 2×51532043537² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51532043537.

It is not an unprimeable number, because it can be changed into a prime (51532043533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11866103 + ... + 11870444.

It is an arithmetic number, because the mean of its divisors is an integer number (6978545112).

Almost surely, 2^51532043537 is an apocalyptic number.

It is an amenable number.

51532043537 is a deficient number, since it is larger than the sum of its proper divisors (4296317359).

51532043537 is a wasteful number, since it uses less digits than its factorization.

51532043537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23736727.

The product of its (nonzero) digits is 189000, while the sum is 38.

The spelling of 51532043537 in words is "fifty-one billion, five hundred thirty-two million, forty-three thousand, five hundred thirty-seven".