53039140 has 144 divisors (see below), whose sum is σ = 145861632. Its totient is φ = 15840000.

The previous prime is 53039131. The next prime is 53039159. The reversal of 53039140 is 4193035.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 525090 + ... + 525190.

It is an arithmetic number, because the mean of its divisors is an integer number (1012928).

Almost surely, 2^53039140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53039140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72930816).

53039140 is an abundant number, since it is smaller than the sum of its proper divisors (92822492).

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

53039140 is a wasteful number, since it uses less digits than its factorization.

53039140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 53039140 is about 7282.7975394075. The cubic root of 53039140 is about 375.7210187228.

The spelling of 53039140 in words is "fifty-three million, thirty-nine thousand, one hundred forty".