54138845 has 8 divisors (see below), whose sum is σ = 65173464. Its totient is φ = 43173184.

The previous prime is 54138823. The next prime is 54138857. The reversal of 54138845 is 54883145.

It can be written as a sum of positive squares in 4 ways, for example, as 1923769 + 52215076 = 1387^2 + 7226^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 54138845 - 2⁸ = 54138589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54138799 and 54138808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15494 + ... + 18663.

It is an arithmetic number, because the mean of its divisors is an integer number (8146683).

Almost surely, 2^54138845 is an apocalyptic number.

It is an amenable number.

54138845 is a deficient number, since it is larger than the sum of its proper divisors (11034619).

54138845 is a wasteful number, since it uses less digits than its factorization.

54138845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34479.

The product of its digits is 76800, while the sum is 38.

The square root of 54138845 is about 7357.9103691198. The cubic root of 54138845 is about 378.2999890831.

The spelling of 54138845 in words is "fifty-four million, one hundred thirty-eight thousand, eight hundred forty-five".