54168538 has 8 divisors (see below), whose sum is σ = 81674388. Its totient is φ = 26943744.

The previous prime is 54168533. The next prime is 54168547. The reversal of 54168538 is 83586145.

It can be written as a sum of positive squares in 2 ways, for example, as 46199209 + 7969329 = 6797^2 + 2823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 54168538.

It is not an unprimeable number, because it can be changed into a prime (54168533) 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, 69781 + ... + 70552.

Almost surely, 2^54168538 is an apocalyptic number.

54168538 is a deficient number, since it is larger than the sum of its proper divisors (27505850).

54168538 is a wasteful number, since it uses less digits than its factorization.

54168538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140528.

The product of its digits is 115200, while the sum is 40.

The square root of 54168538 is about 7359.9278529073. The cubic root of 54168538 is about 378.3691372681.

The spelling of 54168538 in words is "fifty-four million, one hundred sixty-eight thousand, five hundred thirty-eight".