1255779324 has 72 divisors (see below), whose sum is σ = 3443102208. Its totient is φ = 384353280.

The previous prime is 1255779313. The next prime is 1255779347. The reversal of 1255779324 is 4239775521.

It is a happy number.

1255779324 is a `hidden beast` number, since 1 + 2 + 557 + 7 + 93 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1255779324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69 + ... + 50115.

It is an arithmetic number, because the mean of its divisors is an integer number (47820864).

Almost surely, 2^1255779324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255779324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1721551104).

1255779324 is an abundant number, since it is smaller than the sum of its proper divisors (2187322884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255779324 is a wasteful number, since it uses less digits than its factorization.

1255779324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50115 (or 50110 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 1255779324 is about 35436.9767897884. The cubic root of 1255779324 is about 1078.8749498266.

The spelling of 1255779324 in words is "one billion, two hundred fifty-five million, seven hundred seventy-nine thousand, three hundred twenty-four".