1230555775 has 24 divisors (see below), whose sum is σ = 1597647744. Its totient is φ = 938440800.

The previous prime is 1230555773. The next prime is 1230555779. The reversal of 1230555775 is 5775550321.

It is not a de Polignac number, because 1230555775 - 2¹ = 1230555773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230555773) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 173040 + ... + 180010.

It is an arithmetic number, because the mean of its divisors is an integer number (66568656).

Almost surely, 2^1230555775 is an apocalyptic number.

1230555775 is a deficient number, since it is larger than the sum of its proper divisors (367091969).

1230555775 is a wasteful number, since it uses less digits than its factorization.

1230555775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311 (or 7306 counting only the distinct ones).

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 1230555775 is about 35079.2784275846. The cubic root of 1230555775 is about 1071.6026221583.

The spelling of 1230555775 in words is "one billion, two hundred thirty million, five hundred fifty-five thousand, seven hundred seventy-five".