54511321 has 4 divisors (see below), whose sum is σ = 54940672. Its totient is φ = 54081972.

The previous prime is 54511309. The next prime is 54511337. The reversal of 54511321 is 12311545.

54511321 = T₃₃₃ + T₃₃₄ + ... + T₇₁₃.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 54511321 - 2¹³ = 54503129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54511292 and 54511301.

It is not an unprimeable number, because it can be changed into a prime (54511351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214485 + ... + 214738.

It is an arithmetic number, because the mean of its divisors is an integer number (13735168).

Almost surely, 2^54511321 is an apocalyptic number.

It is an amenable number.

54511321 is a deficient number, since it is larger than the sum of its proper divisors (429351).

54511321 is a wasteful number, since it uses less digits than its factorization.

54511321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429350.

The product of its digits is 600, while the sum is 22.

The square root of 54511321 is about 7383.1782451733. The cubic root of 54511321 is about 379.1655767361.

Adding to 54511321 its reverse (12311545), we get a palindrome (66822866).

The spelling of 54511321 in words is "fifty-four million, five hundred eleven thousand, three hundred twenty-one".