54068021 has 12 divisors (see below), whose sum is σ = 63930060. Its totient is φ = 45581760.

The previous prime is 54068017. The next prime is 54068051. The reversal of 54068021 is 12086045.

It can be written as a sum of positive squares in 2 ways, for example, as 23872996 + 30195025 = 4886^2 + 5495^2 .

It is not a de Polignac number, because 54068021 - 2² = 54068017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54068011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6056 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (5327505).

Almost surely, 2^54068021 is an apocalyptic number.

It is an amenable number.

54068021 is a deficient number, since it is larger than the sum of its proper divisors (9862039).

54068021 is a wasteful number, since it uses less digits than its factorization.

54068021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18164 (or 18157 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 54068021 is about 7353.0960146050. The cubic root of 54068021 is about 378.1349540990.

The spelling of 54068021 in words is "fifty-four million, sixty-eight thousand, twenty-one".