55644655 has 16 divisors (see below), whose sum is σ = 77130144. Its totient is φ = 38087680.

The previous prime is 55644643. The next prime is 55644683.

55644655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55644655 - 2⁷ = 55644527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28822 + ... + 30691.

It is an arithmetic number, because the mean of its divisors is an integer number (4820634).

Almost surely, 2^55644655 is an apocalyptic number.

55644655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55644655 is a deficient number, since it is larger than the sum of its proper divisors (21485489).

55644655 is a wasteful number, since it uses less digits than its factorization.

55644655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59546.

The product of its digits is 360000, while the sum is 40.

The square root of 55644655 is about 7459.5345029030. The cubic root of 55644655 is about 381.7752920370.

The spelling of 55644655 in words is "fifty-five million, six hundred forty-four thousand, six hundred fifty-five".