53453920 has 96 divisors (see below), whose sum is σ = 140555520. Its totient is φ = 19077120.

The previous prime is 53453891. The next prime is 53453921. The reversal of 53453920 is 2935435.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53453921) 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, 64066 + ... + 64894.

It is an arithmetic number, because the mean of its divisors is an integer number (1464120).

Almost surely, 2^53453920 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 53453920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70277760).

53453920 is an abundant number, since it is smaller than the sum of its proper divisors (87101600).

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

53453920 is a wasteful number, since it uses less digits than its factorization.

53453920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 53453920 is about 7311.2187766473. The cubic root of 53453920 is about 376.6978890070.

The spelling of 53453920 in words is "fifty-three million, four hundred fifty-three thousand, nine hundred twenty".