53421305 has 16 divisors (see below), whose sum is σ = 73560960. Its totient is φ = 36483072.

The previous prime is 53421289. The next prime is 53421343. The reversal of 53421305 is 50312435.

It is a cyclic number.

It is not a de Polignac number, because 53421305 - 2⁴ = 53421289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6026 + ... + 11964.

It is an arithmetic number, because the mean of its divisors is an integer number (4597560).

Almost surely, 2^53421305 is an apocalyptic number.

It is an amenable number.

53421305 is a deficient number, since it is larger than the sum of its proper divisors (20139655).

53421305 is a wasteful number, since it uses less digits than its factorization.

53421305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53421305 is about 7308.9879600393. The cubic root of 53421305 is about 376.6212591342.

The spelling of 53421305 in words is "fifty-three million, four hundred twenty-one thousand, three hundred five".