53787618 has 16 divisors (see below), whose sum is σ = 119528160. Its totient is φ = 17929188.

The previous prime is 53787611. The next prime is 53787619. The reversal of 53787618 is 81678735.

It is a super-2 number, since 2×53787618² = 5786215700227848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53787611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497980 + ... + 498087.

It is an arithmetic number, because the mean of its divisors is an integer number (7470510).

Almost surely, 2^53787618 is an apocalyptic number.

53787618 is an abundant number, since it is smaller than the sum of its proper divisors (65740542).

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

53787618 is a wasteful number, since it uses less digits than its factorization.

53787618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996078 (or 996072 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 53787618 is about 7334.0042268872. The cubic root of 53787618 is about 377.4801369605.

It can be divided in two parts, 5378 and 7618, that added together give a square (12996 = 114²).

The spelling of 53787618 in words is "fifty-three million, seven hundred eighty-seven thousand, six hundred eighteen".