55149479 has 16 divisors (see below), whose sum is σ = 72804096. Its totient is φ = 40444800.

The previous prime is 55149449. The next prime is 55149491. The reversal of 55149479 is 97494155.

55149479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55149479 - 2²⁰ = 54100903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55149439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19757 + ... + 22374.

It is an arithmetic number, because the mean of its divisors is an integer number (4550256).

Almost surely, 2^55149479 is an apocalyptic number.

55149479 is a deficient number, since it is larger than the sum of its proper divisors (17654617).

55149479 is a wasteful number, since it uses less digits than its factorization.

55149479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42166.

The product of its digits is 226800, while the sum is 44.

The square root of 55149479 is about 7426.2695210987. The cubic root of 55149479 is about 380.6394565724.

The spelling of 55149479 in words is "fifty-five million, one hundred forty-nine thousand, four hundred seventy-nine".