1055550505 has 4 divisors (see below), whose sum is σ = 1266660612. Its totient is φ = 844440400.

The previous prime is 1055550469. The next prime is 1055550557. The reversal of 1055550505 is 5050555501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5050555501 = 593 ⋅8516957.

It can be written as a sum of positive squares in 2 ways, for example, as 185831424 + 869719081 = 13632^2 + 29491^2 .

It is not a de Polignac number, because 1055550505 - 2²¹ = 1053453353 is a prime.

It is a super-2 number, since 2×1055550505² = 2228373737211510050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105555046 + ... + 105555055.

It is an arithmetic number, because the mean of its divisors is an integer number (316665153).

Almost surely, 2^1055550505 is an apocalyptic number.

It is an amenable number.

1055550505 is a deficient number, since it is larger than the sum of its proper divisors (211110107).

1055550505 is an equidigital number, since it uses as much as digits as its factorization.

1055550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211110106.

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

The square root of 1055550505 is about 32489.2367561936. The cubic root of 1055550505 is about 1018.1841667953.

The spelling of 1055550505 in words is "one billion, fifty-five million, five hundred fifty thousand, five hundred five".