1155598 has 4 divisors (see below), whose sum is σ = 1733400. Its totient is φ = 577798.

The previous prime is 1155577. The next prime is 1155601. The reversal of 1155598 is 8955511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288898 + ... + 288901.

It is an arithmetic number, because the mean of its divisors is an integer number (433350).

2^1155598 is an apocalyptic number.

1155598 is a deficient number, since it is larger than the sum of its proper divisors (577802).

1155598 is an equidigital number, since it uses as much as digits as its factorization.

1155598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577801.

The product of its digits is 9000, while the sum is 34.

The square root of 1155598 is about 1074.9874417871. The cubic root of 1155598 is about 104.9386792368.

The spelling of 1155598 in words is "one million, one hundred fifty-five thousand, five hundred ninety-eight".