1361253256 has 32 divisors (see below), whose sum is σ = 2785798080. Its totient is φ = 618436800.

The previous prime is 1361253227. The next prime is 1361253277. The reversal of 1361253256 is 6523521631.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 336526 + ... + 340546.

It is an arithmetic number, because the mean of its divisors is an integer number (87056190).

Almost surely, 2^1361253256 is an apocalyptic number.

It is an amenable number.

1361253256 is an abundant number, since it is smaller than the sum of its proper divisors (1424544824).

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

1361253256 is a wasteful number, since it uses less digits than its factorization.

1361253256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7885 (or 7881 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 1361253256 is about 36895.1657537949. The cubic root of 1361253256 is about 1108.2718708839.

Adding to 1361253256 its reverse (6523521631), we get a palindrome (7884774887).

The spelling of 1361253256 in words is "one billion, three hundred sixty-one million, two hundred fifty-three thousand, two hundred fifty-six".