1255544213 has 16 divisors (see below), whose sum is σ = 1574418816. Its totient is φ = 972680640.

The previous prime is 1255544209. The next prime is 1255544219. The reversal of 1255544213 is 3124455521.

It is a cyclic number.

It is not a de Polignac number, because 1255544213 - 2² = 1255544209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1255544213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255544219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33806 + ... + 60447.

It is an arithmetic number, because the mean of its divisors is an integer number (98401176).

Almost surely, 2^1255544213 is an apocalyptic number.

It is an amenable number.

1255544213 is a deficient number, since it is larger than the sum of its proper divisors (318874603).

1255544213 is a wasteful number, since it uses less digits than its factorization.

1255544213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94444.

The product of its digits is 24000, while the sum is 32.

The square root of 1255544213 is about 35433.6593227400. The cubic root of 1255544213 is about 1078.8076154908.

Adding to 1255544213 its reverse (3124455521), we get a palindrome (4379999734).

The spelling of 1255544213 in words is "one billion, two hundred fifty-five million, five hundred forty-four thousand, two hundred thirteen".