1355555 has 12 divisors (see below), whose sum is σ = 1719072. Its totient is φ = 1026000.

The previous prime is 1355533. The next prime is 1355573. The reversal of 1355555 is 5555531.

It is not a de Polignac number, because 1355555 - 2¹² = 1351459 is a prime.

It is a Duffinian number.

1355555 is a modest number, since divided by 5555 gives 135 as remainder.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1430 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (143256).

2^1355555 is an apocalyptic number.

1355555 is a deficient number, since it is larger than the sum of its proper divisors (363517).

1355555 is an equidigital number, since it uses as much as digits as its factorization.

1355555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 775 counting only the distinct ones).

The product of its digits is 9375, while the sum is 29.

The square root of 1355555 is about 1164.2830411889. The cubic root of 1355555 is about 110.6723285840.

The spelling of 1355555 in words is "one million, three hundred fifty-five thousand, five hundred fifty-five".