53487888 has 80 divisors (see below), whose sum is σ = 146657280. Its totient is φ = 16751232.

The previous prime is 53487887. The next prime is 53487901. The reversal of 53487888 is 88878435.

It is a self number, because there is not a number n which added to its sum of digits gives 53487888.

It is not an unprimeable number, because it can be changed into a prime (53487881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203245 + ... + 203507.

It is an arithmetic number, because the mean of its divisors is an integer number (1833216).

Almost surely, 2^53487888 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 53487888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73328640).

53487888 is an abundant number, since it is smaller than the sum of its proper divisors (93169392).

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

53487888 is a wasteful number, since it uses less digits than its factorization.

53487888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 510 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 51.

The square root of 53487888 is about 7313.5414130228. The cubic root of 53487888 is about 376.7776646621. Note that the first 3 decimals are identical.

The spelling of 53487888 in words is "fifty-three million, four hundred eighty-seven thousand, eight hundred eighty-eight".