54521121 has 4 divisors (see below), whose sum is σ = 72694832. Its totient is φ = 36347412.

The previous prime is 54521107. The next prime is 54521143. The reversal of 54521121 is 12112545.

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.

It is not a de Polignac number, because 54521121 - 2⁷ = 54520993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54521161) 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, 9086851 + ... + 9086856.

It is an arithmetic number, because the mean of its divisors is an integer number (18173708).

Almost surely, 2^54521121 is an apocalyptic number.

It is an amenable number.

54521121 is a deficient number, since it is larger than the sum of its proper divisors (18173711).

54521121 is a wasteful number, since it uses less digits than its factorization.

54521121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18173710.

The product of its digits is 400, while the sum is 21.

The square root of 54521121 is about 7383.8418861728. The cubic root of 54521121 is about 379.1882973987.

Adding to 54521121 its reverse (12112545), we get a palindrome (66633666).

The spelling of 54521121 in words is "fifty-four million, five hundred twenty-one thousand, one hundred twenty-one".