1087851 has 8 divisors (see below), whose sum is σ = 1463760. Its totient is φ = 718592.

The previous prime is 1087843. The next prime is 1087861. The reversal of 1087851 is 1587801.

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

It is a cyclic number.

It is not a de Polignac number, because 1087851 - 2³ = 1087843 is a prime.

It is an Ulam number.

1087851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1087811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (182970).

2^1087851 is an apocalyptic number.

1087851 is a deficient number, since it is larger than the sum of its proper divisors (375909).

1087851 is a wasteful number, since it uses less digits than its factorization.

1087851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 1087851 is about 1043.0009587723. Note that the first 3 decimals coincide. The cubic root of 1087851 is about 102.8465683022.

The spelling of 1087851 in words is "one million, eighty-seven thousand, eight hundred fifty-one".