1251115 has 16 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 916480.

The previous prime is 1251109. The next prime is 1251121. The reversal of 1251115 is 5111521.

It is an interprime number because it is at equal distance from previous prime (1251109) and next prime (1251121).

It is not a de Polignac number, because 1251115 - 2⁵ = 1251083 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3306 + ... + 3664.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2^1251115 is an apocalyptic number.

1251115 is a deficient number, since it is larger than the sum of its proper divisors (381845).

1251115 is a wasteful number, since it uses less digits than its factorization.

1251115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 50, while the sum is 16.

The square root of 1251115 is about 1118.5325207610. The cubic root of 1251115 is about 107.7537542453.

Adding to 1251115 its reverse (5111521), we get a palindrome (6362636).

The spelling of 1251115 in words is "one million, two hundred fifty-one thousand, one hundred fifteen".