55050550 has 24 divisors (see below), whose sum is σ = 103928616. Its totient is φ = 21690240.

The previous prime is 55050547. The next prime is 55050557. The reversal of 55050550 is 5505055.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55050557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4867 + ... + 11566.

It is an arithmetic number, because the mean of its divisors is an integer number (4330359).

Almost surely, 2^55050550 is an apocalyptic number.

55050550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55050550 is a deficient number, since it is larger than the sum of its proper divisors (48878066).

55050550 is a wasteful number, since it uses less digits than its factorization.

55050550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16512 (or 16507 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 55050550 is about 7419.6057846762. The cubic root of 55050550 is about 380.4117190348.

55050550 divided by its sum of digits (25) gives a palindrome (2202022).

The spelling of 55050550 in words is "fifty-five million, fifty thousand, five hundred fifty".