53644734 has 64 divisors (see below), whose sum is σ = 140071680. Its totient is φ = 15003360.

The previous prime is 53644729. The next prime is 53644739. The reversal of 53644734 is 43744635.

It is a happy number.

53644734 is a `hidden beast` number, since 5 + 3 + 644 + 7 + 3 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (53644729) and next prime (53644739).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53644739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4249 + ... + 11195.

It is an arithmetic number, because the mean of its divisors is an integer number (2188620).

Almost surely, 2^53644734 is an apocalyptic number.

53644734 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53644734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70035840).

53644734 is an abundant number, since it is smaller than the sum of its proper divisors (86426946).

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

53644734 is a wasteful number, since it uses less digits than its factorization.

53644734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982 (or 6976 counting only the distinct ones).

The product of its digits is 120960, while the sum is 36.

The square root of 53644734 is about 7324.2565493025. The cubic root of 53644734 is about 377.1455884542.

Subtracting from 53644734 its reverse (43744635), we obtain a palindrome (9900099).

The spelling of 53644734 in words is "fifty-three million, six hundred forty-four thousand, seven hundred thirty-four".