51477618 has 16 divisors (see below), whose sum is σ = 104700960. Its totient is φ = 16868256.

The previous prime is 51477617. The next prime is 51477691. The reversal of 51477618 is 81677415.

51477618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51477617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72355 + ... + 73062.

It is an arithmetic number, because the mean of its divisors is an integer number (6543810).

Almost surely, 2^51477618 is an apocalyptic number.

51477618 is an abundant number, since it is smaller than the sum of its proper divisors (53223342).

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

51477618 is a wasteful number, since it uses less digits than its factorization.

51477618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145481.

The product of its digits is 47040, while the sum is 39.

The square root of 51477618 is about 7174.7904499017. The cubic root of 51477618 is about 371.9970372061.

The spelling of 51477618 in words is "fifty-one million, four hundred seventy-seven thousand, six hundred eighteen".