1248251 has 4 divisors (see below), whose sum is σ = 1265904. Its totient is φ = 1230600.

The previous prime is 1248241. The next prime is 1248253. The reversal of 1248251 is 1528421.

1248251 = 96² + 97² + ... + 166².

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1248251 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8720 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (316476).

2^1248251 is an apocalyptic number.

1248251 is a deficient number, since it is larger than the sum of its proper divisors (17653).

1248251 is an equidigital number, since it uses as much as digits as its factorization.

1248251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17652.

The product of its digits is 640, while the sum is 23.

The square root of 1248251 is about 1117.2515383744. The cubic root of 1248251 is about 107.6714696338.

The spelling of 1248251 in words is "one million, two hundred forty-eight thousand, two hundred fifty-one".