1375535555 has 4 divisors (see below), whose sum is σ = 1650642672. Its totient is φ = 1100428440.

The previous prime is 1375535549. The next prime is 1375535573. The reversal of 1375535555 is 5555355731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1375535555 - 2¹² = 1375531459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137553551 + ... + 137553560.

It is an arithmetic number, because the mean of its divisors is an integer number (412660668).

Almost surely, 2^1375535555 is an apocalyptic number.

1375535555 is a deficient number, since it is larger than the sum of its proper divisors (275107117).

1375535555 is an equidigital number, since it uses as much as digits as its factorization.

1375535555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275107116.

The product of its digits is 984375, while the sum is 44.

The square root of 1375535555 is about 37088.2131545859. The cubic root of 1375535555 is about 1112.1343978972.

The spelling of 1375535555 in words is "one billion, three hundred seventy-five million, five hundred thirty-five thousand, five hundred fifty-five".