53421508 has 12 divisors (see below), whose sum is σ = 106843072. Its totient is φ = 22894920.

The previous prime is 53421503. The next prime is 53421527. The reversal of 53421508 is 80512435.

53421508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

53421508 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1907911 = 53421508 / (5 + 3 + 4 + 2 + 1 + 5 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (53421503) 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 3 ways as a sum of consecutive naturals, for example, 953928 + ... + 953983.

Almost surely, 2^53421508 is an apocalyptic number.

It is an amenable number.

53421508 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53421508 is a wasteful number, since it uses less digits than its factorization.

53421508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907922 (or 1907920 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 53421508 is about 7309.0018470377. The cubic root of 53421508 is about 376.6217361849.

The spelling of 53421508 in words is "fifty-three million, four hundred twenty-one thousand, five hundred eight".