53291420 has 144 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 16321536.

The previous prime is 53291417. The next prime is 53291453. The reversal of 53291420 is 2419235.

53291420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 53291420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 598736 + ... + 598824.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^53291420 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 53291420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72394560).

53291420 is an abundant number, since it is smaller than the sum of its proper divisors (91497700).

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

53291420 is a wasteful number, since it uses less digits than its factorization.

53291420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 53291420 is about 7300.0972596261. The cubic root of 53291420 is about 376.3157808189.

The spelling of 53291420 in words is "fifty-three million, two hundred ninety-one thousand, four hundred twenty".