1255961 has 16 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 990528.

The previous prime is 1255949. The next prime is 1255963. The reversal of 1255961 is 1695521.

It is a de Polignac number, because none of the positive numbers 2^k-1255961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4535 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (97200).

2^1255961 is an apocalyptic number.

It is an amenable number.

1255961 is a deficient number, since it is larger than the sum of its proper divisors (299239).

1255961 is a wasteful number, since it uses less digits than its factorization.

1255961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its digits is 2700, while the sum is 29.

The square root of 1255961 is about 1120.6966583336. The cubic root of 1255961 is about 107.8926974953.

The spelling of 1255961 in words is "one million, two hundred fifty-five thousand, nine hundred sixty-one".