54215161 has 32 divisors (see below), whose sum is σ = 74624256. Its totient is φ = 38016000.

The previous prime is 54215149. The next prime is 54215167. The reversal of 54215161 is 16151245.

It is a happy number.

It is not a de Polignac number, because 54215161 - 2¹¹ = 54213113 is a prime.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (54215167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40381 + ... + 41701.

It is an arithmetic number, because the mean of its divisors is an integer number (2332008).

It is a Poulet number, since it divides 2^54215160-1.

Almost surely, 2^54215161 is an apocalyptic number.

It is an amenable number.

54215161 is a deficient number, since it is larger than the sum of its proper divisors (20409095).

54215161 is a wasteful number, since it uses less digits than its factorization.

54215161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393.

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

The square root of 54215161 is about 7363.0945260807. The cubic root of 54215161 is about 378.4776605685.

The spelling of 54215161 in words is "fifty-four million, two hundred fifteen thousand, one hundred sixty-one".