51478826 has 16 divisors (see below), whose sum is σ = 90302784. Its totient is φ = 21549024.

The previous prime is 51478781. The next prime is 51478837. The reversal of 51478826 is 62887415.

It is a Curzon 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, 42155 + ... + 43358.

It is an arithmetic number, because the mean of its divisors is an integer number (5643924).

Almost surely, 2^51478826 is an apocalyptic number.

51478826 is a deficient number, since it is larger than the sum of its proper divisors (38823958).

51478826 is a wasteful number, since it uses less digits than its factorization.

51478826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85565.

The product of its digits is 107520, while the sum is 41.

The square root of 51478826 is about 7174.8746330511. The cubic root of 51478826 is about 371.9999470074. Note that the first 4 decimals are identical.

The spelling of 51478826 in words is "fifty-one million, four hundred seventy-eight thousand, eight hundred twenty-six".