51125415001 has 16 divisors (see below), whose sum is σ = 55674740880. Its totient is φ = 46751109120.

The previous prime is 51125414993. The next prime is 51125415007. The reversal of 51125415001 is 10051452115.

It can be written as a sum of positive squares in 8 ways, for example, as 5173061776 + 45952353225 = 71924^2 + 214365^2 .

It is a cyclic number.

It is not a de Polignac number, because 51125415001 - 2³ = 51125414993 is a prime.

It is a super-2 number, since 2×51125415001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51125415007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388641 + ... + 503281.

It is an arithmetic number, because the mean of its divisors is an integer number (3479671305).

Almost surely, 2^51125415001 is an apocalyptic number.

It is an amenable number.

51125415001 is a deficient number, since it is larger than the sum of its proper divisors (4549325879).

51125415001 is a wasteful number, since it uses less digits than its factorization.

51125415001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115404.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 51125415001 its reverse (10051452115), we get a palindrome (61176867116).

The spelling of 51125415001 in words is "fifty-one billion, one hundred twenty-five million, four hundred fifteen thousand, one".