54378819 has 12 divisors (see below), whose sum is σ = 85687992. Its totient is φ = 32956800.

The previous prime is 54378787. The next prime is 54378823. The reversal of 54378819 is 91887345.

54378819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54378819 - 2⁵ = 54378787 is a prime.

It is a super-2 number, since 2×54378819² = 5914111911669522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54378319) 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 in 11 ways as a sum of consecutive naturals, for example, 274542 + ... + 274739.

It is an arithmetic number, because the mean of its divisors is an integer number (7140666).

Almost surely, 2^54378819 is an apocalyptic number.

54378819 is a deficient number, since it is larger than the sum of its proper divisors (31309173).

54378819 is a wasteful number, since it uses less digits than its factorization.

54378819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549298 (or 549295 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 54378819 is about 7374.1995497817. The cubic root of 54378819 is about 378.8581118030.

It can be divided in two parts, 54 and 378819, that added together give a palindrome (378873).

The spelling of 54378819 in words is "fifty-four million, three hundred seventy-eight thousand, eight hundred nineteen".