53421090 has 16 divisors (see below), whose sum is σ = 128210688. Its totient is φ = 14245616.

The previous prime is 53421079. The next prime is 53421097. The reversal of 53421090 is 9012435.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53421090.

It is not an unprimeable number, because it can be changed into a prime (53421097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890322 + ... + 890381.

It is an arithmetic number, because the mean of its divisors is an integer number (8013168).

Almost surely, 2^53421090 is an apocalyptic number.

53421090 is an abundant number, since it is smaller than the sum of its proper divisors (74789598).

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

53421090 is a wasteful number, since it uses less digits than its factorization.

53421090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780713.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 53421090 is about 7308.9732521059. The cubic root of 53421090 is about 376.6207538821.

The spelling of 53421090 in words is "fifty-three million, four hundred twenty-one thousand, ninety".