1055505550 has 48 divisors (see below), whose sum is σ = 2163035664. Its totient is φ = 380000000.

The previous prime is 1055505511. The next prime is 1055505551. The reversal of 1055505550 is 555055501.

It is a super-2 number, since 2×1055505550² = 2228183932161605000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055505551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46050 + ... + 65050.

It is an arithmetic number, because the mean of its divisors is an integer number (45063243).

Almost surely, 2^1055505550 is an apocalyptic number.

1055505550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055505550 is an abundant number, since it is smaller than the sum of its proper divisors (1107530114).

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

1055505550 is a wasteful number, since it uses less digits than its factorization.

1055505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19125 (or 19120 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 1055505550 is about 32488.5449043197. The cubic root of 1055505550 is about 1018.1697120570.

It can be divided in two parts, 1055 and 505550, that added together give a palindrome (506605).

The spelling of 1055505550 in words is "one billion, fifty-five million, five hundred five thousand, five hundred fifty".