1255251 has 8 divisors (see below), whose sum is σ = 1681344. Its totient is φ = 833000.

The previous prime is 1255249. The next prime is 1255253. The reversal of 1255251 is 1525521.

It is an interprime number because it is at equal distance from previous prime (1255249) and next prime (1255253).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255251 - 2¹ = 1255249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255253) 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 7 ways as a sum of consecutive naturals, for example, 81 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (210168).

2^1255251 is an apocalyptic number.

1255251 is a deficient number, since it is larger than the sum of its proper divisors (426093).

1255251 is a wasteful number, since it uses less digits than its factorization.

1255251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its digits is 500, while the sum is 21.

The square root of 1255251 is about 1120.3798463021. The cubic root of 1255251 is about 107.8723629322.

The spelling of 1255251 in words is "one million, two hundred fifty-five thousand, two hundred fifty-one".