54056819 has 4 divisors (see below), whose sum is σ = 55375320. Its totient is φ = 52738320.

The previous prime is 54056809. The next prime is 54056837. The reversal of 54056819 is 91865045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54056819 - 2²⁰ = 53008243 is a prime.

It is a super-2 number, since 2×54056819² = 5844279360797522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54056809) 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, 659189 + ... + 659270.

It is an arithmetic number, because the mean of its divisors is an integer number (13843830).

Almost surely, 2^54056819 is an apocalyptic number.

54056819 is a deficient number, since it is larger than the sum of its proper divisors (1318501).

54056819 is a wasteful number, since it uses less digits than its factorization.

54056819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318500.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 54056819 is about 7352.3342551873. The cubic root of 54056819 is about 378.1088378585.

The spelling of 54056819 in words is "fifty-four million, fifty-six thousand, eight hundred nineteen".