1087155 has 16 divisors (see below), whose sum is σ = 1932960. Its totient is φ = 579744.

The previous prime is 1087147. The next prime is 1087159. The reversal of 1087155 is 5517801.

It is not a de Polignac number, because 1087155 - 2³ = 1087147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1087159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3892 + ... + 4161.

It is an arithmetic number, because the mean of its divisors is an integer number (120810).

2^1087155 is an apocalyptic number.

1087155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1087155 is a deficient number, since it is larger than the sum of its proper divisors (845805).

1087155 is an equidigital number, since it uses as much as digits as its factorization.

1087155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067 (or 8061 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 1087155 is about 1042.6672527705. The cubic root of 1087155 is about 102.8246301009.

The spelling of 1087155 in words is "one million, eighty-seven thousand, one hundred fifty-five".