53644120 has 16 divisors (see below), whose sum is σ = 120699360. Its totient is φ = 21457632.

The previous prime is 53644103. The next prime is 53644141. The reversal of 53644120 is 2144635.

It is a super-2 number, since 2×53644120² = 5755383221148800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670512 + ... + 670591.

It is an arithmetic number, because the mean of its divisors is an integer number (7543710).

Almost surely, 2^53644120 is an apocalyptic number.

It is an amenable number.

53644120 is an abundant number, since it is smaller than the sum of its proper divisors (67055240).

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

53644120 is a wasteful number, since it uses less digits than its factorization.

53644120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341114 (or 1341110 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 53644120 is about 7324.2146336655. The cubic root of 53644120 is about 377.1441495539.

Adding to 53644120 its reverse (2144635), we get a palindrome (55788755).

The spelling of 53644120 in words is "fifty-three million, six hundred forty-four thousand, one hundred twenty".