53170208 has 144 divisors (see below), whose sum is σ = 140132160. Its totient is φ = 19284480.

The previous prime is 53170199. The next prime is 53170211. The reversal of 53170208 is 80207135.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1715153 + ... + 1715183.

It is an arithmetic number, because the mean of its divisors is an integer number (973140).

Almost surely, 2^53170208 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 53170208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70066080).

53170208 is an abundant number, since it is smaller than the sum of its proper divisors (86961952).

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

53170208 is a wasteful number, since it uses less digits than its factorization.

53170208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 53170208 is about 7291.7904522826. The cubic root of 53170208 is about 376.0302525832.

The spelling of 53170208 in words is "fifty-three million, one hundred seventy thousand, two hundred eight".