256436552 has 8 divisors (see below), whose sum is σ = 480818550. Its totient is φ = 128218272.

The previous prime is 256436549. The next prime is 256436569. The reversal of 256436552 is 255634652.

It can be written as a sum of positive squares in only one way, i.e., 255168676 + 1267876 = 15974^2 + 1126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16027277 + ... + 16027292.

Almost surely, 2^256436552 is an apocalyptic number.

It is an amenable number.

256436552 is a deficient number, since it is larger than the sum of its proper divisors (224381998).

256436552 is a wasteful number, since it uses less digits than its factorization.

256436552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32054575 (or 32054571 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

The square root of 256436552 is about 16013.6364389854. The cubic root of 256436552 is about 635.3211445198.

The spelling of 256436552 in words is "two hundred fifty-six million, four hundred thirty-six thousand, five hundred fifty-two".