1255017 has 4 divisors (see below), whose sum is σ = 1673360. Its totient is φ = 836676.

The previous prime is 1255013. The next prime is 1255021. The reversal of 1255017 is 7105521.

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 an interprime number because it is at equal distance from previous prime (1255013) and next prime (1255021).

It is not a de Polignac number, because 1255017 - 2² = 1255013 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1254984 and 1255002.

It is not an unprimeable number, because it can be changed into a prime (1255013) 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, 209167 + ... + 209172.

It is an arithmetic number, because the mean of its divisors is an integer number (418340).

2^1255017 is an apocalyptic number.

It is an amenable number.

1255017 is a deficient number, since it is larger than the sum of its proper divisors (418343).

1255017 is an equidigital number, since it uses as much as digits as its factorization.

1255017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418342.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 1255017 is about 1120.2754125660. The cubic root of 1255017 is about 107.8656594385.

The spelling of 1255017 in words is "one million, two hundred fifty-five thousand, seventeen".