54405155 has 32 divisors (see below), whose sum is σ = 78962688. Its totient is φ = 35193600.

The previous prime is 54405121. The next prime is 54405163. The reversal of 54405155 is 55150445.

It is a happy number.

It is not a de Polignac number, because 54405155 - 2¹⁶ = 54339619 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43874 + ... + 45096.

It is an arithmetic number, because the mean of its divisors is an integer number (2467584).

Almost surely, 2^54405155 is an apocalyptic number.

54405155 is a deficient number, since it is larger than the sum of its proper divisors (24557533).

54405155 is a wasteful number, since it uses less digits than its factorization.

54405155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 54405155 is about 7375.9850189653. The cubic root of 54405155 is about 378.9192630448.

The spelling of 54405155 in words is "fifty-four million, four hundred five thousand, one hundred fifty-five".