54165121 has 4 divisors (see below), whose sum is σ = 54180144. Its totient is φ = 54150100.

The previous prime is 54165109. The next prime is 54165131. The reversal of 54165121 is 12156145.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 54165121 - 2¹⁷ = 54034049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54165131) 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, 1506 + ... + 10516.

It is an arithmetic number, because the mean of its divisors is an integer number (13545036).

Almost surely, 2^54165121 is an apocalyptic number.

It is an amenable number.

54165121 is a deficient number, since it is larger than the sum of its proper divisors (15023).

54165121 is an equidigital number, since it uses as much as digits as its factorization.

54165121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15022.

The product of its digits is 1200, while the sum is 25.

The square root of 54165121 is about 7359.6957138186. The cubic root of 54165121 is about 378.3611811458.

The spelling of 54165121 in words is "fifty-four million, one hundred sixty-five thousand, one hundred twenty-one".