54001021 has 4 divisors (see below), whose sum is σ = 56843200. Its totient is φ = 51158844.

The previous prime is 54000971. The next prime is 54001037. The reversal of 54001021 is 12010045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12010045 = 5 ⋅2402009.

It is a cyclic number.

It is not a de Polignac number, because 54001021 - 2¹⁵ = 53968253 is a prime.

It is a super-2 number, since 2×54001021² = 5832220538084882, 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 = 54000992 and 54001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54001091) 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, 1421061 + ... + 1421098.

It is an arithmetic number, because the mean of its divisors is an integer number (14210800).

Almost surely, 2^54001021 is an apocalyptic number.

It is an amenable number.

54001021 is a deficient number, since it is larger than the sum of its proper divisors (2842179).

54001021 is a wasteful number, since it uses less digits than its factorization.

54001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842178.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 54001021 is about 7348.5386982719. The cubic root of 54001021 is about 377.9786971375.

Adding to 54001021 its reverse (12010045), we get a palindrome (66011066).

The spelling of 54001021 in words is "fifty-four million, one thousand, twenty-one".