53887128 has 32 divisors (see below), whose sum is σ = 136032000. Its totient is φ = 17787168.

The previous prime is 53887123. The next prime is 53887153. The reversal of 53887128 is 82178835.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 53887128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53887121) 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, 8428 + ... + 13371.

It is an arithmetic number, because the mean of its divisors is an integer number (4251000).

Almost surely, 2^53887128 is an apocalyptic number.

It is an amenable number.

53887128 is an abundant number, since it is smaller than the sum of its proper divisors (82144872).

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

53887128 is a wasteful number, since it uses less digits than its factorization.

53887128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21911 (or 21907 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 53887128 is about 7340.7852441003. The cubic root of 53887128 is about 377.7127797697.

The spelling of 53887128 in words is "fifty-three million, eight hundred eighty-seven thousand, one hundred twenty-eight".