51513043031 has 8 divisors (see below), whose sum is σ = 51564881280. Its totient is φ = 51461233848.

The previous prime is 51513043027. The next prime is 51513043037. The reversal of 51513043031 is 13034031515.

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 51513043031 - 2² = 51513043027 is a prime.

It is a super-2 number, since 2×51513043031² (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 (51513043037) 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, 5269310 + ... + 5279076.

It is an arithmetic number, because the mean of its divisors is an integer number (6445610160).

Almost surely, 2^51513043031 is an apocalyptic number.

51513043031 is a deficient number, since it is larger than the sum of its proper divisors (51838249).

51513043031 is a wasteful number, since it uses less digits than its factorization.

51513043031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14533.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 51513043031 its reverse (13034031515), we get a palindrome (64547074546).

The spelling of 51513043031 in words is "fifty-one billion, five hundred thirteen million, forty-three thousand, thirty-one".