1089251 has 4 divisors (see below), whose sum is σ = 1146600. Its totient is φ = 1031904.

The previous prime is 1089239. The next prime is 1089259. The reversal of 1089251 is 1529801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1089251 - 2¹⁴ = 1072867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1089251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089259) 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, 28646 + ... + 28683.

It is an arithmetic number, because the mean of its divisors is an integer number (286650).

2^1089251 is an apocalyptic number.

1089251 is a deficient number, since it is larger than the sum of its proper divisors (57349).

1089251 is an equidigital number, since it uses as much as digits as its factorization.

1089251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57348.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1089251 is about 1043.6718833043. The cubic root of 1089251 is about 102.8906685429.

The spelling of 1089251 in words is "one million, eighty-nine thousand, two hundred fifty-one".