54415779 has 8 divisors (see below), whose sum is σ = 79150272. Its totient is φ = 32979240.

The previous prime is 54415763. The next prime is 54415783. The reversal of 54415779 is 97751445.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54415779 - 2⁴ = 54415763 is a prime.

It is a super-2 number, since 2×54415779² = 5922154008353682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 54415779.

It is not an unprimeable number, because it can be changed into a prime (54415799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824449 + ... + 824514.

It is an arithmetic number, because the mean of its divisors is an integer number (9893784).

Almost surely, 2^54415779 is an apocalyptic number.

54415779 is a deficient number, since it is larger than the sum of its proper divisors (24734493).

54415779 is a wasteful number, since it uses less digits than its factorization.

54415779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648977.

The product of its digits is 176400, while the sum is 42.

The square root of 54415779 is about 7376.7051588090. The cubic root of 54415779 is about 378.9439260033.

The spelling of 54415779 in words is "fifty-four million, four hundred fifteen thousand, seven hundred seventy-nine".