54181243 has 2 divisors, whose sum is σ = 54181244. Its totient is φ = 54181242.

The previous prime is 54181241. The next prime is 54181277. The reversal of 54181243 is 34218145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54181243 - 2¹ = 54181241 is a prime.

Together with 54181241, it forms a pair of twin primes.

It is equal to p_3236347 and since 54181243 and 3236347 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (54181241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27090621 + 27090622.

It is an arithmetic number, because the mean of its divisors is an integer number (27090622).

Almost surely, 2^54181243 is an apocalyptic number.

54181243 is a deficient number, since it is larger than the sum of its proper divisors (1).

54181243 is an equidigital number, since it uses as much as digits as its factorization.

54181243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 54181243 is about 7360.7909221768. The cubic root of 54181243 is about 378.3987165791.

Adding to 54181243 its reverse (34218145), we get a palindrome (88399388).

The spelling of 54181243 in words is "fifty-four million, one hundred eighty-one thousand, two hundred forty-three".