51245105341451 has 4 divisors (see below), whose sum is σ = 58565834675952. Its totient is φ = 43924376006952.

The previous prime is 51245105341447. The next prime is 51245105341481. The reversal of 51245105341451 is 15414350154215.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51245105341451 - 2² = 51245105341447 is a prime.

It is a super-2 number, since 2×51245105341451² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51245105341399 and 51245105341408.

It is not an unprimeable number, because it can be changed into a prime (51245105341411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3660364667240 + ... + 3660364667253.

It is an arithmetic number, because the mean of its divisors is an integer number (14641458668988).

Almost surely, 2^{51245105341451} is an apocalyptic number.

51245105341451 is a deficient number, since it is larger than the sum of its proper divisors (7320729334501).

51245105341451 is an equidigital number, since it uses as much as digits as its factorization.

51245105341451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320729334500.

The product of its (nonzero) digits is 240000, while the sum is 41.

Adding to 51245105341451 its reverse (15414350154215), we get a palindrome (66659455495666).

The spelling of 51245105341451 in words is "fifty-one trillion, two hundred forty-five billion, one hundred five million, three hundred forty-one thousand, four hundred fifty-one".