54112021 has 4 divisors (see below), whose sum is σ = 54144844. Its totient is φ = 54079200.

The previous prime is 54112001. The next prime is 54112043. The reversal of 54112021 is 12021145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12021145 = 5 ⋅2404229.

It can be written as a sum of positive squares in 2 ways, for example, as 4901796 + 49210225 = 2214^2 + 7015^2 .

It is a cyclic number.

It is not a de Polignac number, because 54112021 - 2⁹ = 54111509 is a prime.

It is a super-2 number, since 2×54112021² = 5856221633408882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54111986 and 54112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54112001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13800 + ... + 17281.

It is an arithmetic number, because the mean of its divisors is an integer number (13536211).

Almost surely, 2^54112021 is an apocalyptic number.

It is an amenable number.

54112021 is a deficient number, since it is larger than the sum of its proper divisors (32823).

54112021 is a wasteful number, since it uses less digits than its factorization.

54112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32822.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 54112021 is about 7356.0873431465. The cubic root of 54112021 is about 378.2375004006.

Adding to 54112021 its reverse (12021145), we get a palindrome (66133166).

The spelling of 54112021 in words is "fifty-four million, one hundred twelve thousand, twenty-one".