1255951 has 4 divisors (see below), whose sum is σ = 1258600. Its totient is φ = 1253304.

The previous prime is 1255949. The next prime is 1255963. The reversal of 1255951 is 1595521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1595521 = 461 ⋅3461.

It is a cyclic number.

It is not a de Polignac number, because 1255951 - 2¹ = 1255949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255931) 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, 396 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (314650).

2^1255951 is an apocalyptic number.

1255951 is a deficient number, since it is larger than the sum of its proper divisors (2649).

1255951 is an equidigital number, since it uses as much as digits as its factorization.

1255951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648.

The product of its digits is 2250, while the sum is 28.

The square root of 1255951 is about 1120.6921968141. The cubic root of 1255951 is about 107.8924111462.

The spelling of 1255951 in words is "one million, two hundred fifty-five thousand, nine hundred fifty-one".