1135555 has 4 divisors (see below), whose sum is σ = 1362672. Its totient is φ = 908440.

The previous prime is 1135531. The next prime is 1135597. The reversal of 1135555 is 5555311.

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

It is not a de Polignac number, because 1135555 - 2⁷ = 1135427 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 10.

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, 113551 + ... + 113560.

It is an arithmetic number, because the mean of its divisors is an integer number (340668).

2^1135555 is an apocalyptic number.

1135555 is a deficient number, since it is larger than the sum of its proper divisors (227117).

1135555 is an equidigital number, since it uses as much as digits as its factorization.

1135555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227116.

The product of its digits is 1875, while the sum is 25.

The square root of 1135555 is about 1065.6242302050. The cubic root of 1135555 is about 104.3284426682.

The spelling of 1135555 in words is "one million, one hundred thirty-five thousand, five hundred fifty-five".