1155898 has 8 divisors (see below), whose sum is σ = 1835892. Its totient is φ = 543936.

The previous prime is 1155863. The next prime is 1155899. The reversal of 1155898 is 8985511.

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 47089 = 1053^2 + 217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1155898² = 2672200372808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16965 + ... + 17032.

2^1155898 is an apocalyptic number.

1155898 is a deficient number, since it is larger than the sum of its proper divisors (679994).

1155898 is a wasteful number, since it uses less digits than its factorization.

1155898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34016.

The product of its digits is 14400, while the sum is 37.

The square root of 1155898 is about 1075.1269692460. The cubic root of 1155898 is about 104.9477593494.

The spelling of 1155898 in words is "one million, one hundred fifty-five thousand, eight hundred ninety-eight".