53225840 has 80 divisors (see below), whose sum is σ = 131970720. Its totient is φ = 19961856.

The previous prime is 53225813. The next prime is 53225867. The reversal of 53225840 is 4852235.

It is an interprime number because it is at equal distance from previous prime (53225813) and next prime (53225867).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548672 + ... + 548768.

It is an arithmetic number, because the mean of its divisors is an integer number (1649634).

Almost surely, 2^53225840 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 53225840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65985360).

53225840 is an abundant number, since it is smaller than the sum of its proper divisors (78744880).

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

53225840 is an equidigital number, since it uses as much as digits as its factorization.

53225840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 53225840 is about 7295.6041559284. The cubic root of 53225840 is about 376.1613537147.

The spelling of 53225840 in words is "fifty-three million, two hundred twenty-five thousand, eight hundred forty".