1187151 has 8 divisors (see below), whose sum is σ = 1809024. Its totient is φ = 678360.

The previous prime is 1187141. The next prime is 1187159. The reversal of 1187151 is 1517811.

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

It is not a de Polignac number, because 1187151 - 2⁷ = 1187023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187159) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28245 + ... + 28286.

It is an arithmetic number, because the mean of its divisors is an integer number (226128).

2^1187151 is an apocalyptic number.

1187151 is a deficient number, since it is larger than the sum of its proper divisors (621873).

1187151 is an equidigital number, since it uses as much as digits as its factorization.

1187151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56541.

The product of its digits is 280, while the sum is 24.

The square root of 1187151 is about 1089.5645919357. The cubic root of 1187151 is about 105.8852145378.

The spelling of 1187151 in words is "one million, one hundred eighty-seven thousand, one hundred fifty-one".