53551008 has 144 divisors (see below), whose sum is σ = 176432256. Its totient is φ = 15091200.

The previous prime is 53550989. The next prime is 53551009. The reversal of 53551008 is 80015535.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (53551009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203485 + ... + 203747.

It is an arithmetic number, because the mean of its divisors is an integer number (1225224).

Almost surely, 2^53551008 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 53551008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88216128).

53551008 is an abundant number, since it is smaller than the sum of its proper divisors (122881248).

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

53551008 is a wasteful number, since it uses less digits than its factorization.

53551008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 53551008 is about 7317.8554235514. The cubic root of 53551008 is about 376.9258156936.

The spelling of 53551008 in words is "fifty-three million, five hundred fifty-one thousand, eight".