51264251403554 has 16 divisors (see below), whose sum is σ = 87882258125376. Its totient is φ = 21970222386000.

The previous prime is 51264251403473. The next prime is 51264251403559. The reversal of 51264251403554 is 45530415246215.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51264251403499 and 51264251403508.

It is not an unprimeable number, because it can be changed into a prime (51264251403559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12385397 + ... + 15997704.

It is an arithmetic number, because the mean of its divisors is an integer number (5492641132836).

Almost surely, 2^{51264251403554} is an apocalyptic number.

51264251403554 is a deficient number, since it is larger than the sum of its proper divisors (36618006721822).

51264251403554 is a wasteful number, since it uses less digits than its factorization.

51264251403554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28512121.

The product of its (nonzero) digits is 2880000, while the sum is 47.

Adding to 51264251403554 its reverse (45530415246215), we get a palindrome (96794666649769).

The spelling of 51264251403554 in words is "fifty-one trillion, two hundred sixty-four billion, two hundred fifty-one million, four hundred three thousand, five hundred fifty-four".