55028505 has 16 divisors (see below), whose sum is σ = 100623744. Its totient is φ = 25155840.

The previous prime is 55028497. The next prime is 55028521. The reversal of 55028505 is 50582055.

It is not a de Polignac number, because 55028505 - 2³ = 55028497 is a prime.

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, 261936 + ... + 262145.

It is an arithmetic number, because the mean of its divisors is an integer number (6288984).

Almost surely, 2^55028505 is an apocalyptic number.

It is an amenable number.

55028505 is a deficient number, since it is larger than the sum of its proper divisors (45595239).

55028505 is a wasteful number, since it uses less digits than its factorization.

55028505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524096.

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

The square root of 55028505 is about 7418.1200448631. The cubic root of 55028505 is about 380.3609336142.

The spelling of 55028505 in words is "fifty-five million, twenty-eight thousand, five hundred five".