54420819 has 4 divisors (see below), whose sum is σ = 72561096. Its totient is φ = 36280544.

The previous prime is 54420811. The next prime is 54420857. The reversal of 54420819 is 91802445.

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 54420819 - 2³ = 54420811 is a prime.

It is a super-2 number, since 2×54420819² = 5923251081261522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54420819.

It is not an unprimeable number, because it can be changed into a prime (54420811) 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, 9070134 + ... + 9070139.

It is an arithmetic number, because the mean of its divisors is an integer number (18140274).

Almost surely, 2^54420819 is an apocalyptic number.

54420819 is a deficient number, since it is larger than the sum of its proper divisors (18140277).

54420819 is a wasteful number, since it uses less digits than its factorization.

54420819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140276.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 54420819 is about 7377.0467668302. The cubic root of 54420819 is about 378.9556249287.

The spelling of 54420819 in words is "fifty-four million, four hundred twenty thousand, eight hundred nineteen".