1087251 has 16 divisors (see below), whose sum is σ = 1617408. Its totient is φ = 644000.

The previous prime is 1087249. The next prime is 1087259. The reversal of 1087251 is 1527801.

It is a cyclic number.

It is not a de Polignac number, because 1087251 - 2¹ = 1087249 is a prime.

It is a super-2 number, since 2×1087251² = 2364229474002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1087259) 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, 1201 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (101088).

2^1087251 is an apocalyptic number.

1087251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1087251 is a deficient number, since it is larger than the sum of its proper divisors (530157).

1087251 is a wasteful number, since it uses less digits than its factorization.

1087251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1087251 is about 1042.7132875340. The cubic root of 1087251 is about 102.8276566163.

The spelling of 1087251 in words is "one million, eighty-seven thousand, two hundred fifty-one".