55144455 has 16 divisors (see below), whose sum is σ = 92067840. Its totient is φ = 28131488.

The previous prime is 55144423. The next prime is 55144469. The reversal of 55144455 is 55444155.

It is a cyclic number.

It is not a de Polignac number, because 55144455 - 2⁵ = 55144423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79575 + ... + 80264.

It is an arithmetic number, because the mean of its divisors is an integer number (5754240).

Almost surely, 2^55144455 is an apocalyptic number.

55144455 is a deficient number, since it is larger than the sum of its proper divisors (36923385).

55144455 is a wasteful number, since it uses less digits than its factorization.

55144455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159870.

The product of its digits is 40000, while the sum is 33.

The square root of 55144455 is about 7425.9312547316. The cubic root of 55144455 is about 380.6278977403.

The spelling of 55144455 in words is "fifty-five million, one hundred forty-four thousand, four hundred fifty-five".