54518719 has 4 divisors (see below), whose sum is σ = 54911080. Its totient is φ = 54126360.

The previous prime is 54518707. The next prime is 54518741. The reversal of 54518719 is 91781545.

It is a happy number.

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 54518719 - 2⁹ = 54518207 is a prime.

It is a super-2 number, since 2×54518719² = 5944581442801922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54518749) 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, 195972 + ... + 196249.

It is an arithmetic number, because the mean of its divisors is an integer number (13727770).

Almost surely, 2^54518719 is an apocalyptic number.

54518719 is a deficient number, since it is larger than the sum of its proper divisors (392361).

54518719 is a wasteful number, since it uses less digits than its factorization.

54518719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392360.

The product of its digits is 50400, while the sum is 40.

The square root of 54518719 is about 7383.6792319277. The cubic root of 54518719 is about 379.1827287699.

The spelling of 54518719 in words is "fifty-four million, five hundred eighteen thousand, seven hundred nineteen".