1255147 has 2 divisors, whose sum is σ = 1255148. Its totient is φ = 1255146.

The previous prime is 1255139. The next prime is 1255153. The reversal of 1255147 is 7415521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255147 - 2³ = 1255139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627573 + 627574.

It is an arithmetic number, because the mean of its divisors is an integer number (627574).

2^1255147 is an apocalyptic number.

1255147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255147 is an equidigital number, since it uses as much as digits as its factorization.

1255147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 25.

The square root of 1255147 is about 1120.3334325102. Note that the first 3 decimals coincide. The cubic root of 1255147 is about 107.8693837045.

It can be divided in two parts, 125514 and 7, that added together give a palindrome (125521).

The spelling of 1255147 in words is "one million, two hundred fifty-five thousand, one hundred forty-seven".