54612021 has 16 divisors (see below), whose sum is σ = 74792960. Its totient is φ = 35426160.

The previous prime is 54612011. The next prime is 54612043. The reversal of 54612021 is 12021645.

It is not a de Polignac number, because 54612021 - 2¹⁸ = 54349877 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 (54612001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42060 + ... + 43338.

It is an arithmetic number, because the mean of its divisors is an integer number (4674560).

Almost surely, 2^54612021 is an apocalyptic number.

It is an amenable number.

54612021 is a deficient number, since it is larger than the sum of its proper divisors (20180939).

54612021 is a wasteful number, since it uses less digits than its factorization.

54612021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 54612021 is about 7389.9946549372. The cubic root of 54612021 is about 379.3989135030.

Adding to 54612021 its reverse (12021645), we get a palindrome (66633666).

The spelling of 54612021 in words is "fifty-four million, six hundred twelve thousand, twenty-one".