53139960 has 192 divisors, whose sum is σ = 192909600. Its totient is φ = 12607488.

The previous prime is 53139937. The next prime is 53140001. The reversal of 53139960 is 6993135.

53139960 is a `hidden beast` number, since 531 + 39 + 96 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 116052 + ... + 116508.

Almost surely, 2^53139960 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 53139960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96454800).

53139960 is an abundant number, since it is smaller than the sum of its proper divisors (139769640).

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

53139960 is a wasteful number, since it uses less digits than its factorization.

53139960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 53139960 is about 7289.7160438525. The cubic root of 53139960 is about 375.9589324394.

The spelling of 53139960 in words is "fifty-three million, one hundred thirty-nine thousand, nine hundred sixty".