1320030555 has 32 divisors (see below), whose sum is σ = 2235720960. Its totient is φ = 663922560.

The previous prime is 1320030527. The next prime is 1320030563. The reversal of 1320030555 is 5550300231.

It is not a de Polignac number, because 1320030555 - 2⁷ = 1320030427 is a prime.

It is a super-2 number, since 2×1320030555² = 3484961332267216050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16581 + ... + 53990.

It is an arithmetic number, because the mean of its divisors is an integer number (69866280).

Almost surely, 2^1320030555 is an apocalyptic number.

1320030555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1320030555 is a deficient number, since it is larger than the sum of its proper divisors (915690405).

1320030555 is a wasteful number, since it uses less digits than its factorization.

1320030555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70651.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 1320030555 is about 36332.2247460846. The cubic root of 1320030555 is about 1096.9697744750.

Adding to 1320030555 its reverse (5550300231), we get a palindrome (6870330786).

The spelling of 1320030555 in words is "one billion, three hundred twenty million, thirty thousand, five hundred fifty-five".