53421506 has 16 divisors (see below), whose sum is σ = 81152280. Its totient is φ = 26373120.

The previous prime is 53421503. The next prime is 53421527. The reversal of 53421506 is 60512435.

53421506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 53421481 + 25 = 7309^2 + 5^2 .

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 7 ways as a sum of consecutive naturals, for example, 65630 + ... + 66438.

Almost surely, 2^53421506 is an apocalyptic number.

53421506 is a deficient number, since it is larger than the sum of its proper divisors (27730774).

53421506 is a wasteful number, since it uses less digits than its factorization.

53421506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 53421506 is about 7309.0017102201. The cubic root of 53421506 is about 376.6217314849.

The spelling of 53421506 in words is "fifty-three million, four hundred twenty-one thousand, five hundred six".