54843881 has 4 divisors (see below), whose sum is σ = 55085712. Its totient is φ = 54602052.

The previous prime is 54843871. The next prime is 54843889. The reversal of 54843881 is 18834845.

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 an emirpimes, since its reverse is a distinct semiprime: 18834845 = 5 ⋅3766969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54843881 is a prime.

It is a super-2 number, since 2×54843881² = 6015702566284322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54843889) 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, 120575 + ... + 121028.

It is an arithmetic number, because the mean of its divisors is an integer number (13771428).

Almost surely, 2^54843881 is an apocalyptic number.

It is an amenable number.

54843881 is a deficient number, since it is larger than the sum of its proper divisors (241831).

54843881 is a wasteful number, since it uses less digits than its factorization.

54843881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241830.

The product of its digits is 122880, while the sum is 41.

The square root of 54843881 is about 7405.6654663845. The cubic root of 54843881 is about 379.9350789369.

The spelling of 54843881 in words is "fifty-four million, eight hundred forty-three thousand, eight hundred eighty-one".