53421111 has 24 divisors (see below), whose sum is σ = 80841696. Its totient is φ = 33929280.

The previous prime is 53421097. The next prime is 53421127. The reversal of 53421111 is 11112435.

53421111 is a `hidden beast` number, since 534 + 21 + 111 = 666.

It is not a de Polignac number, because 53421111 - 2⁵ = 53421079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53421611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86841 + ... + 87453.

It is an arithmetic number, because the mean of its divisors is an integer number (3368404).

Almost surely, 2^53421111 is an apocalyptic number.

53421111 is a deficient number, since it is larger than the sum of its proper divisors (27420585).

53421111 is a wasteful number, since it uses less digits than its factorization.

53421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1060 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 53421111 is about 7308.9746886961. The cubic root of 53421111 is about 376.6208032323.

Adding to 53421111 its reverse (11112435), we get a palindrome (64533546).

The spelling of 53421111 in words is "fifty-three million, four hundred twenty-one thousand, one hundred eleven".