51104778 has 16 divisors (see below), whose sum is σ = 104702976. Its totient is φ = 16619360.

The previous prime is 51104761. The next prime is 51104783. The reversal of 51104778 is 87740115.

It is a super-2 number, since 2×51104778² = 5223396668858568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103626 + ... + 104117.

It is an arithmetic number, because the mean of its divisors is an integer number (6543936).

Almost surely, 2^51104778 is an apocalyptic number.

51104778 is an abundant number, since it is smaller than the sum of its proper divisors (53598198).

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

51104778 is a wasteful number, since it uses less digits than its factorization.

51104778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207789.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 51104778 is about 7148.7605918788. The cubic root of 51104778 is about 371.0967652020.

The spelling of 51104778 in words is "fifty-one million, one hundred four thousand, seven hundred seventy-eight".