53381889 has 16 divisors (see below), whose sum is σ = 86274240. Its totient is φ = 32352480.

The previous prime is 53381869. The next prime is 53381903. The reversal of 53381889 is 98818335.

It is not a de Polignac number, because 53381889 - 2¹¹ = 53379841 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (53381869) 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, 89572 + ... + 90165.

It is an arithmetic number, because the mean of its divisors is an integer number (5392140).

Almost surely, 2^53381889 is an apocalyptic number.

It is an amenable number.

53381889 is a deficient number, since it is larger than the sum of its proper divisors (32892351).

53381889 is a wasteful number, since it uses less digits than its factorization.

53381889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179757 (or 179751 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 53381889 is about 7306.2910563432. The cubic root of 53381889 is about 376.5286084831.

It can be divided in two parts, 5338 and 1889, that added together give a palindrome (7227).

The spelling of 53381889 in words is "fifty-three million, three hundred eighty-one thousand, eight hundred eighty-nine".