53442820 has 24 divisors (see below), whose sum is σ = 118137600. Its totient is φ = 20251872.

The previous prime is 53442817. The next prime is 53442827. The reversal of 53442820 is 2824435.

53442820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53442820² = 5712270019104800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53442827) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 69940 + ... + 70699.

It is an arithmetic number, because the mean of its divisors is an integer number (4922400).

Almost surely, 2^53442820 is an apocalyptic number.

It is an amenable number.

53442820 is an abundant number, since it is smaller than the sum of its proper divisors (64694780).

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

53442820 is a wasteful number, since it uses less digits than its factorization.

53442820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140667 (or 140665 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 53442820 is about 7310.4596298728. The cubic root of 53442820 is about 376.6718127402.

The spelling of 53442820 in words is "fifty-three million, four hundred forty-two thousand, eight hundred twenty".