54179819 has 4 divisors (see below), whose sum is σ = 55501320. Its totient is φ = 52858320.

The previous prime is 54179813. The next prime is 54179831. The reversal of 54179819 is 91897145.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54179819 is a prime.

It is a super-2 number, since 2×54179819² = 5870905573745522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54179819.

It is not an unprimeable number, because it can be changed into a prime (54179813) 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, 660689 + ... + 660770.

It is an arithmetic number, because the mean of its divisors is an integer number (13875330).

Almost surely, 2^54179819 is an apocalyptic number.

54179819 is a deficient number, since it is larger than the sum of its proper divisors (1321501).

54179819 is a wasteful number, since it uses less digits than its factorization.

54179819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321500.

The product of its digits is 90720, while the sum is 44.

The square root of 54179819 is about 7360.6941928055. The cubic root of 54179819 is about 378.3954015051.

The spelling of 54179819 in words is "fifty-four million, one hundred seventy-nine thousand, eight hundred nineteen".