54531021 has 8 divisors (see below), whose sum is σ = 72755424. Its totient is φ = 36330320.

The previous prime is 54531017. The next prime is 54531041. The reversal of 54531021 is 12013545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54531021 - 2² = 54531017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54531041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 10451.

It is an arithmetic number, because the mean of its divisors is an integer number (9094428).

Almost surely, 2^54531021 is an apocalyptic number.

It is an amenable number.

54531021 is a deficient number, since it is larger than the sum of its proper divisors (18224403).

54531021 is a wasteful number, since it uses less digits than its factorization.

54531021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11851.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 54531021 is about 7384.5122384623. The cubic root of 54531021 is about 379.2112471405.

Adding to 54531021 its reverse (12013545), we get a palindrome (66544566).

The spelling of 54531021 in words is "fifty-four million, five hundred thirty-one thousand, twenty-one".