54154981 has 2 divisors, whose sum is σ = 54154982. Its totient is φ = 54154980.

The previous prime is 54154967. The next prime is 54154993. The reversal of 54154981 is 18945145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54154881 + 100 = 7359^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 54154981 - 2¹⁹ = 53630693 is a prime.

It is a super-2 number, since 2×54154981² = 5865523934220722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54154981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54154081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27077490 + 27077491.

It is an arithmetic number, because the mean of its divisors is an integer number (27077491).

Almost surely, 2^54154981 is an apocalyptic number.

It is an amenable number.

54154981 is a deficient number, since it is larger than the sum of its proper divisors (1).

54154981 is an equidigital number, since it uses as much as digits as its factorization.

54154981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 37.

The square root of 54154981 is about 7359.0067943983. The cubic root of 54154981 is about 378.3375692609.

The spelling of 54154981 in words is "fifty-four million, one hundred fifty-four thousand, nine hundred eighty-one".