51032551531 has 8 divisors (see below), whose sum is σ = 55275811920. Its totient is φ = 46834673952.

The previous prime is 51032551523. The next prime is 51032551541. The reversal of 51032551531 is 13515523015.

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 51032551531 - 2³ = 51032551523 is a prime.

It is a super-2 number, since 2×51032551531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51032551493 and 51032551502.

It is not an unprimeable number, because it can be changed into a prime (51032551541) 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, 11343361 + ... + 11347858.

It is an arithmetic number, because the mean of its divisors is an integer number (6909476490).

Almost surely, 2^51032551531 is an apocalyptic number.

51032551531 is a deficient number, since it is larger than the sum of its proper divisors (4243260389).

51032551531 is a wasteful number, since it uses less digits than its factorization.

51032551531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22691405.

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 51032551531 in words is "fifty-one billion, thirty-two million, five hundred fifty-one thousand, five hundred thirty-one".