51031101530 has 8 divisors (see below), whose sum is σ = 91855982772. Its totient is φ = 20412440608.

The previous prime is 51031101503. The next prime is 51031101547. The reversal of 51031101530 is 3510113015.

It can be written as a sum of positive squares in 2 ways, for example, as 50841681361 + 189420169 = 225481^2 + 13763^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2551555067 + ... + 2551555086.

Almost surely, 2^51031101530 is an apocalyptic number.

51031101530 is a deficient number, since it is larger than the sum of its proper divisors (40824881242).

51031101530 is a wasteful number, since it uses less digits than its factorization.

51031101530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103110160.

The product of its (nonzero) digits is 225, while the sum is 20.

Adding to 51031101530 its reverse (3510113015), we get a palindrome (54541214545).

The spelling of 51031101530 in words is "fifty-one billion, thirty-one million, one hundred one thousand, five hundred thirty".