53720244 has 36 divisors (see below), whose sum is σ = 138954816. Its totient is φ = 17489808.

The previous prime is 53720243. The next prime is 53720273. The reversal of 53720244 is 44202735.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53720243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15804 + ... + 18899.

It is an arithmetic number, because the mean of its divisors is an integer number (3859856).

Almost surely, 2^53720244 is an apocalyptic number.

It is an amenable number.

53720244 is an abundant number, since it is smaller than the sum of its proper divisors (85234572).

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

53720244 is a wasteful number, since it uses less digits than its factorization.

53720244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34756 (or 34751 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 53720244 is about 7329.4095260123. The cubic root of 53720244 is about 377.3224614342.

Adding to 53720244 its reverse (44202735), we get a palindrome (97922979).

The spelling of 53720244 in words is "fifty-three million, seven hundred twenty thousand, two hundred forty-four".