54378243 has 8 divisors (see below), whose sum is σ = 80560400. Its totient is φ = 36252144.

The previous prime is 54378241. The next prime is 54378251. The reversal of 54378243 is 34287345.

It is a happy number.

54378243 is a `hidden beast` number, since 543 + 78 + 2 + 43 = 666.

It is not a de Polignac number, because 54378243 - 2¹ = 54378241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54378198 and 54378207.

It is not an unprimeable number, because it can be changed into a prime (54378241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006978 + ... + 1007031.

It is an arithmetic number, because the mean of its divisors is an integer number (10070050).

Almost surely, 2^54378243 is an apocalyptic number.

54378243 is a deficient number, since it is larger than the sum of its proper divisors (26182157).

54378243 is a wasteful number, since it uses less digits than its factorization.

54378243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014018 (or 2014012 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 54378243 is about 7374.1604945919. The cubic root of 54378243 is about 378.8567741312.

The spelling of 54378243 in words is "fifty-four million, three hundred seventy-eight thousand, two hundred forty-three".