54823981 has 2 divisors, whose sum is σ = 54823982. Its totient is φ = 54823980.

The previous prime is 54823939. The next prime is 54824051. The reversal of 54823981 is 18932845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 11329956 = 6595^2 + 3366^2 .

It is a cyclic number.

It is not a de Polignac number, because 54823981 - 2¹⁵ = 54791213 is a prime.

It is a super-2 number, since 2×54823981² = 6011337785376722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54823931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27411990 + 27411991.

It is an arithmetic number, because the mean of its divisors is an integer number (27411991).

Almost surely, 2^54823981 is an apocalyptic number.

It is an amenable number.

54823981 is a deficient number, since it is larger than the sum of its proper divisors (1).

54823981 is an equidigital number, since it uses as much as digits as its factorization.

54823981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 54823981 is about 7404.3217785291. The cubic root of 54823981 is about 379.8891204661.

The spelling of 54823981 in words is "fifty-four million, eight hundred twenty-three thousand, nine hundred eighty-one".