53197320 has 128 divisors (see below), whose sum is σ = 175841280. Its totient is φ = 12768000.

The previous prime is 53197253. The next prime is 53197343. The reversal of 53197320 is 2379135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252015 + ... + 252225.

It is an arithmetic number, because the mean of its divisors is an integer number (1373760).

Almost surely, 2^53197320 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 53197320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87920640).

53197320 is an abundant number, since it is smaller than the sum of its proper divisors (122643960).

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

53197320 is a wasteful number, since it uses less digits than its factorization.

53197320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 53197320 is about 7293.6492923639. The cubic root of 53197320 is about 376.0941555359.

The spelling of 53197320 in words is "fifty-three million, one hundred ninety-seven thousand, three hundred twenty".