1055187 has 20 divisors (see below), whose sum is σ = 1802416. Its totient is φ = 602640.

The previous prime is 1055167. The next prime is 1055189. The reversal of 1055187 is 7815501.

It is not a de Polignac number, because 1055187 - 2⁸ = 1054931 is a prime.

It is a super-2 number, since 2×1055187² = 2226839209938, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1055187.

It is not an unprimeable number, because it can be changed into a prime (1055189) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 364 + ... + 1497.

2^1055187 is an apocalyptic number.

1055187 is a deficient number, since it is larger than the sum of its proper divisors (747229).

1055187 is an equidigital number, since it uses as much as digits as its factorization.

1055187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1871 counting only the distinct ones).

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

The square root of 1055187 is about 1027.2229553510. Note that the first 3 decimals coincide. The cubic root of 1055187 is about 101.8067274385.

The spelling of 1055187 in words is "one million, fifty-five thousand, one hundred eighty-seven".