51045502531 has 8 divisors (see below), whose sum is σ = 52197490800. Its totient is φ = 49903074720.

The previous prime is 51045502513. The next prime is 51045502561. The reversal of 51045502531 is 13520554015.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51045502531 is a prime.

It is a super-2 number, since 2×51045502531² (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 = 51045502493 and 51045502502.

It is not an unprimeable number, because it can be changed into a prime (51045502511) 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 7 ways as a sum of consecutive naturals, for example, 2379316 + ... + 2400673.

It is an arithmetic number, because the mean of its divisors is an integer number (6524686350).

Almost surely, 2^51045502531 is an apocalyptic number.

51045502531 is a deficient number, since it is larger than the sum of its proper divisors (1151988269).

51045502531 is a wasteful number, since it uses less digits than its factorization.

51045502531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780229.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 51045502531 in words is "fifty-one billion, forty-five million, five hundred two thousand, five hundred thirty-one".