51612618 has 16 divisors (see below), whose sum is σ = 103296960. Its totient is φ = 17192256.

The previous prime is 51612611. The next prime is 51612623. The reversal of 51612618 is 81621615.

51612618 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 (51612611) 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, 12723 + ... + 16281.

It is an arithmetic number, because the mean of its divisors is an integer number (6456060).

Almost surely, 2^51612618 is an apocalyptic number.

51612618 is an abundant number, since it is smaller than the sum of its proper divisors (51684342).

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

51612618 is a wasteful number, since it uses less digits than its factorization.

51612618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981.

The product of its digits is 2880, while the sum is 30.

The square root of 51612618 is about 7184.1922301676. The cubic root of 51612618 is about 372.3219406337.

The spelling of 51612618 in words is "fifty-one million, six hundred twelve thousand, six hundred eighteen".