1253881 has 4 divisors (see below), whose sum is σ = 1269072. Its totient is φ = 1238692.

The previous prime is 1253851. The next prime is 1253887. The reversal of 1253881 is 1883521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1253881 - 2⁵ = 1253849 is a prime.

It is a super-2 number, since 2×1253881² = 3144435124322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253887) 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, 7471 + ... + 7636.

It is an arithmetic number, because the mean of its divisors is an integer number (317268).

2^1253881 is an apocalyptic number.

It is an amenable number.

1253881 is a deficient number, since it is larger than the sum of its proper divisors (15191).

1253881 is an equidigital number, since it uses as much as digits as its factorization.

1253881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190.

The product of its digits is 1920, while the sum is 28.

The square root of 1253881 is about 1119.7682796007. The cubic root of 1253881 is about 107.8331041346.

The spelling of 1253881 in words is "one million, two hundred fifty-three thousand, eight hundred eighty-one".