55408911 has 16 divisors (see below), whose sum is σ = 75961344. Its totient is φ = 35908704.

The previous prime is 55408907. The next prime is 55408961. The reversal of 55408911 is 11980455.

It is not a de Polignac number, because 55408911 - 2² = 55408907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55408901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20886 + ... + 23388.

It is an arithmetic number, because the mean of its divisors is an integer number (4747584).

Almost surely, 2^55408911 is an apocalyptic number.

55408911 is a deficient number, since it is larger than the sum of its proper divisors (20552433).

55408911 is a wasteful number, since it uses less digits than its factorization.

55408911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 55408911 is about 7443.7162089913. The cubic root of 55408911 is about 381.2353861280.

The spelling of 55408911 in words is "fifty-five million, four hundred eight thousand, nine hundred eleven".