51215344001 has 16 divisors (see below), whose sum is σ = 55361187840. Its totient is φ = 47240606160.

The previous prime is 51215343997. The next prime is 51215344027. The reversal of 51215344001 is 10044351215.

It is a cyclic number.

It is not a de Polignac number, because 51215344001 - 2² = 51215343997 is a prime.

It is a super-2 number, since 2×51215344001² (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 (51215344031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74870 + ... + 328688.

It is an arithmetic number, because the mean of its divisors is an integer number (3460074240).

Almost surely, 2^51215344001 is an apocalyptic number.

It is an amenable number.

51215344001 is a deficient number, since it is larger than the sum of its proper divisors (4145843839).

51215344001 is a wasteful number, since it uses less digits than its factorization.

51215344001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254156.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 51215344001 its reverse (10044351215), we get a palindrome (61259695216).

The spelling of 51215344001 in words is "fifty-one billion, two hundred fifteen million, three hundred forty-four thousand, one".