155768256 has 126 divisors (see below), whose sum is σ = 519470640. Its totient is φ = 44497152.

The previous prime is 155768243. The next prime is 155768279. The reversal of 155768256 is 652867551.

It is a tau number, because it is divible by the number of its divisors (126).

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 25465 + ... + 30983.

Almost surely, 2^155768256 is an apocalyptic number.

155768256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155768256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259735320).

155768256 is an abundant number, since it is smaller than the sum of its proper divisors (363702384).

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

155768256 is a wasteful number, since it uses less digits than its factorization.

155768256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551 (or 5531 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 155768256 is about 12480.7153641127. The cubic root of 155768256 is about 538.0545634558.

It can be divided in two parts, 15576 and 8256, that added together give a palindrome (23832).

The spelling of 155768256 in words is "one hundred fifty-five million, seven hundred sixty-eight thousand, two hundred fifty-six".