1252811 has 4 divisors (see below), whose sum is σ = 1431792. Its totient is φ = 1073832.

The previous prime is 1252799. The next prime is 1252817. The reversal of 1252811 is 1182521.

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 1252811 - 2¹⁰ = 1251787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89480 + ... + 89493.

It is an arithmetic number, because the mean of its divisors is an integer number (357948).

2^1252811 is an apocalyptic number.

1252811 is a deficient number, since it is larger than the sum of its proper divisors (178981).

1252811 is an equidigital number, since it uses as much as digits as its factorization.

1252811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178980.

The product of its digits is 160, while the sum is 20.

The square root of 1252811 is about 1119.2904002090. The cubic root of 1252811 is about 107.8024222604.

The spelling of 1252811 in words is "one million, two hundred fifty-two thousand, eight hundred eleven".