54158917 has 2 divisors, whose sum is σ = 54158918. Its totient is φ = 54158916.

The previous prime is 54158893. The next prime is 54158947. The reversal of 54158917 is 71985145.

It is a happy number.

54158917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 5731236 = 6959^2 + 2394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54158917 is a prime.

It is a super-2 number, since 2×54158917² = 5866376581225778, 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 54158917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54158947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27079458 + 27079459.

It is an arithmetic number, because the mean of its divisors is an integer number (27079459).

Almost surely, 2^54158917 is an apocalyptic number.

It is an amenable number.

54158917 is a deficient number, since it is larger than the sum of its proper divisors (1).

54158917 is an equidigital number, since it uses as much as digits as its factorization.

54158917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 40.

The square root of 54158917 is about 7359.2742169320. The cubic root of 54158917 is about 378.3467349342.

The spelling of 54158917 in words is "fifty-four million, one hundred fifty-eight thousand, nine hundred seventeen".