1255491 has 12 divisors (see below), whose sum is σ = 1825200. Its totient is φ = 831600.

The previous prime is 1255477. The next prime is 1255519. The reversal of 1255491 is 1945521.

It is not a de Polignac number, because 1255491 - 2⁶ = 1255427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1441 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (152100).

2^1255491 is an apocalyptic number.

1255491 is a deficient number, since it is larger than the sum of its proper divisors (569709).

1255491 is a wasteful number, since it uses less digits than its factorization.

1255491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 903 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1255491 is about 1120.4869477151. The cubic root of 1255491 is about 107.8792374450.

The spelling of 1255491 in words is "one million, two hundred fifty-five thousand, four hundred ninety-one".