54938821 has 16 divisors (see below), whose sum is σ = 65997184. Its totient is φ = 44743104.

The previous prime is 54938813. The next prime is 54938827. The reversal of 54938821 is 12883945.

It is not a de Polignac number, because 54938821 - 2³ = 54938813 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 (54938827) 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, 8671 + ... + 13603.

It is an arithmetic number, because the mean of its divisors is an integer number (4124824).

Almost surely, 2^54938821 is an apocalyptic number.

It is an amenable number.

54938821 is a deficient number, since it is larger than the sum of its proper divisors (11058363).

54938821 is a wasteful number, since it uses less digits than its factorization.

54938821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020.

The product of its digits is 69120, while the sum is 40.

The square root of 54938821 is about 7412.0726520994. The cubic root of 54938821 is about 380.1541871984.

The spelling of 54938821 in words is "fifty-four million, nine hundred thirty-eight thousand, eight hundred twenty-one".