51513040254 has 16 divisors (see below), whose sum is σ = 110951163792. Its totient is φ = 15850166208.

The previous prime is 51513040231. The next prime is 51513040289. The reversal of 51513040254 is 45204031515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330211719 + ... + 330211874.

It is an arithmetic number, because the mean of its divisors is an integer number (6934447737).

Almost surely, 2^51513040254 is an apocalyptic number.

51513040254 is an abundant number, since it is smaller than the sum of its proper divisors (59438123538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51513040254 is a wasteful number, since it uses less digits than its factorization.

51513040254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660423611.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 51513040254 its reverse (45204031515), we get a palindrome (96717071769).

The spelling of 51513040254 in words is "fifty-one billion, five hundred thirteen million, forty thousand, two hundred fifty-four".