53744140 has 24 divisors (see below), whose sum is σ = 119502432. Its totient is φ = 20232960.

The previous prime is 53744113. The next prime is 53744147. The reversal of 53744140 is 4144735.

It is a junction number, because it is equal to n+sod(n) for n = 53744099 and 53744108.

It is not an unprimeable number, because it can be changed into a prime (53744147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78696 + ... + 79375.

It is an arithmetic number, because the mean of its divisors is an integer number (4979268).

Almost surely, 2^53744140 is an apocalyptic number.

It is an amenable number.

53744140 is an abundant number, since it is smaller than the sum of its proper divisors (65758292).

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

53744140 is a wasteful number, since it uses less digits than its factorization.

53744140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158097 (or 158095 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 53744140 is about 7331.0394897313. The cubic root of 53744140 is about 377.3784003769.

Adding to 53744140 its reverse (4144735), we get a palindrome (57888875).

The spelling of 53744140 in words is "fifty-three million, seven hundred forty-four thousand, one hundred forty".