51475218 has 32 divisors (see below), whose sum is σ = 114747840. Its totient is φ = 15298560.

The previous prime is 51475211. The next prime is 51475231. The reversal of 51475218 is 81257415.

It is not an unprimeable number, because it can be changed into a prime (51475211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11343 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (3585870).

Almost surely, 2^51475218 is an apocalyptic number.

51475218 is an abundant number, since it is smaller than the sum of its proper divisors (63272622).

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

51475218 is a wasteful number, since it uses less digits than its factorization.

51475218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26602.

The product of its digits is 11200, while the sum is 33.

The square root of 51475218 is about 7174.6231956807. The cubic root of 51475218 is about 371.9912560091.

The spelling of 51475218 in words is "fifty-one million, four hundred seventy-five thousand, two hundred eighteen".