1151887 has 4 divisors (see below), whose sum is σ = 1256616. Its totient is φ = 1047160.

The previous prime is 1151881. The next prime is 1151911. The reversal of 1151887 is 7881511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7881511 = 11 ⋅716501.

It is a cyclic number.

It is not a de Polignac number, because 1151887 - 2³ = 1151879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151881) 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 3 ways as a sum of consecutive naturals, for example, 52348 + ... + 52369.

It is an arithmetic number, because the mean of its divisors is an integer number (314154).

2^1151887 is an apocalyptic number.

1151887 is a deficient number, since it is larger than the sum of its proper divisors (104729).

1151887 is a wasteful number, since it uses less digits than its factorization.

1151887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104728.

The product of its digits is 2240, while the sum is 31.

The square root of 1151887 is about 1073.2599871420. The cubic root of 1151887 is about 104.8262280663.

It can be divided in two parts, 115 and 1887, that added together give a palindrome (2002).

The spelling of 1151887 in words is "one million, one hundred fifty-one thousand, eight hundred eighty-seven".