53701644 has 12 divisors (see below), whose sum is σ = 125303864. Its totient is φ = 17900544.

The previous prime is 53701643. The next prime is 53701663. The reversal of 53701644 is 44610735.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (53701643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2237557 + ... + 2237580.

Almost surely, 2^53701644 is an apocalyptic number.

It is an amenable number.

53701644 is an abundant number, since it is smaller than the sum of its proper divisors (71602220).

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

53701644 is a wasteful number, since it uses less digits than its factorization.

53701644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475144 (or 4475142 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 53701644 is about 7328.1405554206. The cubic root of 53701644 is about 377.2789085920.

Subtracting from 53701644 its reverse (44610735), we obtain a palindrome (9090909).

It can be divided in two parts, 53701 and 644, that added together give a palindrome (54345).

The spelling of 53701644 in words is "fifty-three million, seven hundred one thousand, six hundred forty-four".