5555000 has 80 divisors (see below), whose sum is σ = 14339160. Its totient is φ = 2000000.

The previous prime is 5554993. The next prime is 5555009. The reversal of 5555000 is 5555.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54950 + ... + 55050.

Almost surely, 2^5555000 is an apocalyptic number.

5555000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5555000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7169580).

5555000 is an abundant number, since it is smaller than the sum of its proper divisors (8784160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5555000 is a wasteful number, since it uses less digits than its factorization.

5555000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 5555000 is about 2356.9047498785. The cubic root of 5555000 is about 177.1038576749.

5555000 divided by its product of nonzero digits (625) gives a palindrome (8888).

5555000 divided by its reverse (5555) gives a cube (1000 = 10³).

It can be divided in two parts, 555 and 5000, that added together give a palindrome (5555).

The spelling of 5555000 in words is "five million, five hundred fifty-five thousand".