51201400051 has 16 divisors (see below), whose sum is σ = 57261607200. Its totient is φ = 45568147968.

The previous prime is 51201400031. The next prime is 51201400069. The reversal of 51201400051 is 15000410215.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51201400051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (51201400031) 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, 1235350 + ... + 1276123.

It is an arithmetic number, because the mean of its divisors is an integer number (3578850450).

Almost surely, 2^51201400051 is an apocalyptic number.

51201400051 is a deficient number, since it is larger than the sum of its proper divisors (6060207149).

51201400051 is a wasteful number, since it uses less digits than its factorization.

51201400051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511558.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 51201400051 its reverse (15000410215), we get a palindrome (66201810266).

The spelling of 51201400051 in words is "fifty-one billion, two hundred one million, four hundred thousand, fifty-one".