55208805 has 32 divisors (see below), whose sum is σ = 90476544. Its totient is φ = 28740096.

The previous prime is 55208759. The next prime is 55208831. The reversal of 55208805 is 50880255.

It is not a de Polignac number, because 55208805 - 2¹⁷ = 55077733 is a prime.

It is a congruent 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, 138867 + ... + 139263.

It is an arithmetic number, because the mean of its divisors is an integer number (2827392).

Almost surely, 2^55208805 is an apocalyptic number.

It is an amenable number.

55208805 is a deficient number, since it is larger than the sum of its proper divisors (35267739).

55208805 is a wasteful number, since it uses less digits than its factorization.

55208805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 55208805 is about 7430.2627813557. The cubic root of 55208805 is about 380.7758962047.

The spelling of 55208805 in words is "fifty-five million, two hundred eight thousand, eight hundred five".