1355331555 has 32 divisors (see below), whose sum is σ = 2412083520. Its totient is φ = 722062080.

The previous prime is 1355331517. The next prime is 1355331581. The reversal of 1355331555 is 5551335531.

It is not a de Polignac number, because 1355331555 - 2¹⁰ = 1355330531 is a prime.

It is a nude number because it is divisible by every one of its digits.

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, 132919 + ... + 142751.

It is an arithmetic number, because the mean of its divisors is an integer number (75377610).

Almost surely, 2^1355331555 is an apocalyptic number.

1355331555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1355331555 is a deficient number, since it is larger than the sum of its proper divisors (1056751965).

1355331555 is a wasteful number, since it uses less digits than its factorization.

1355331555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10868 (or 10862 counting only the distinct ones).

The product of its digits is 84375, while the sum is 36.

The square root of 1355331555 is about 36814.8279229986. The cubic root of 1355331555 is about 1106.6624730188.

The spelling of 1355331555 in words is "one billion, three hundred fifty-five million, three hundred thirty-one thousand, five hundred fifty-five".