51005222454 has 32 divisors (see below), whose sum is σ = 102988734336. Its totient is φ = 16838769920.

The previous prime is 51005222449. The next prime is 51005222461. The reversal of 51005222454 is 45422250015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3852454 + ... + 3865670.

It is an arithmetic number, because the mean of its divisors is an integer number (3218397948).

Almost surely, 2^51005222454 is an apocalyptic number.

51005222454 is an abundant number, since it is smaller than the sum of its proper divisors (51983511882).

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

51005222454 is a wasteful number, since it uses less digits than its factorization.

51005222454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19340.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 51005222454 its reverse (45422250015), we get a palindrome (96427472469).

The spelling of 51005222454 in words is "fifty-one billion, five million, two hundred twenty-two thousand, four hundred fifty-four".