55828505 has 8 divisors (see below), whose sum is σ = 67053312. Its totient is φ = 44623408.

The previous prime is 55828501. The next prime is 55828537. The reversal of 55828505 is 50582855.

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 55828505 - 2² = 55828501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55828501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2264 + ... + 10806.

It is an arithmetic number, because the mean of its divisors is an integer number (8381664).

Almost surely, 2^55828505 is an apocalyptic number.

It is an amenable number.

55828505 is a deficient number, since it is larger than the sum of its proper divisors (11224807).

55828505 is a wasteful number, since it uses less digits than its factorization.

55828505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9855.

The product of its (nonzero) digits is 80000, while the sum is 38.

The square root of 55828505 is about 7471.8474957670. The cubic root of 55828505 is about 382.1952918080.

It can be divided in two parts, 5582850 and 5, that added together give a palindrome (5582855).

The spelling of 55828505 in words is "fifty-five million, eight hundred twenty-eight thousand, five hundred five".