51503404434 has 32 divisors (see below), whose sum is σ = 103994689920. Its totient is φ = 17003855232.

The previous prime is 51503404417. The next prime is 51503404439. The reversal of 51503404434 is 43440430515.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51503404395 and 51503404404.

It is not an unprimeable number, because it can be changed into a prime (51503404439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207507 + ... + 382185.

It is an arithmetic number, because the mean of its divisors is an integer number (3249834060).

Almost surely, 2^51503404434 is an apocalyptic number.

51503404434 is an abundant number, since it is smaller than the sum of its proper divisors (52491285486).

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

51503404434 is a wasteful number, since it uses less digits than its factorization.

51503404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175154.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 51503404434 its reverse (43440430515), we get a palindrome (94943834949).

The spelling of 51503404434 in words is "fifty-one billion, five hundred three million, four hundred four thousand, four hundred thirty-four".