54516532121 has 4 divisors (see below), whose sum is σ = 55440541200. Its totient is φ = 53592523044.

The previous prime is 54516532117. The next prime is 54516532129. The reversal of 54516532121 is 12123561545.

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 54516532121 - 2² = 54516532117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54516532129) 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, 462004451 + ... + 462004568.

It is an arithmetic number, because the mean of its divisors is an integer number (13860135300).

Almost surely, 2^54516532121 is an apocalyptic number.

It is an amenable number.

54516532121 is a deficient number, since it is larger than the sum of its proper divisors (924009079).

54516532121 is an equidigital number, since it uses as much as digits as its factorization.

54516532121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924009078.

The product of its digits is 36000, while the sum is 35.

The spelling of 54516532121 in words is "fifty-four billion, five hundred sixteen million, five hundred thirty-two thousand, one hundred twenty-one".