55280055 has 8 divisors (see below), whose sum is σ = 88448112. Its totient is φ = 29482688.

The previous prime is 55280047. The next prime is 55280077. The reversal of 55280055 is 55008255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55280055 - 2³ = 55280047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842654 + ... + 1842683.

It is an arithmetic number, because the mean of its divisors is an integer number (11056014).

Almost surely, 2^55280055 is an apocalyptic number.

55280055 is a deficient number, since it is larger than the sum of its proper divisors (33168057).

55280055 is a wasteful number, since it uses less digits than its factorization.

55280055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685345.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 55280055 is about 7435.0558168719. The cubic root of 55280055 is about 380.9396298696.

The spelling of 55280055 in words is "fifty-five million, two hundred eighty thousand, fifty-five".