1255519 has 2 divisors, whose sum is σ = 1255520. Its totient is φ = 1255518.

The previous prime is 1255477. The next prime is 1255549. The reversal of 1255519 is 9155521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255519 - 2⁷ = 1255391 is a prime.

It is a super-2 number, since 2×1255519² = 3152655918722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255549) 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 as a sum of consecutive naturals, namely, 627759 + 627760.

It is an arithmetic number, because the mean of its divisors is an integer number (627760).

2^1255519 is an apocalyptic number.

1255519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255519 is an equidigital number, since it uses as much as digits as its factorization.

1255519 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1255519 is about 1120.4994422132. The cubic root of 1255519 is about 107.8800394145.

The spelling of 1255519 in words is "one million, two hundred fifty-five thousand, five hundred nineteen".