54868021 has 4 divisors (see below), whose sum is σ = 59088652. Its totient is φ = 50647392.

The previous prime is 54868007. The next prime is 54868039. The reversal of 54868021 is 12086845.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2464900 + 52403121 = 1570^2 + 7239^2 .

It is a cyclic number.

It is not a de Polignac number, because 54868021 - 2⁹ = 54867509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54868001) 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, 2110296 + ... + 2110321.

It is an arithmetic number, because the mean of its divisors is an integer number (14772163).

Almost surely, 2^54868021 is an apocalyptic number.

It is an amenable number.

54868021 is a deficient number, since it is larger than the sum of its proper divisors (4220631).

54868021 is a wasteful number, since it uses less digits than its factorization.

54868021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220630.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 54868021 is about 7407.2951203526. The cubic root of 54868021 is about 379.9908146441.

The spelling of 54868021 in words is "fifty-four million, eight hundred sixty-eight thousand, twenty-one".