256313552 has 40 divisors (see below), whose sum is σ = 545938272. Its totient is φ = 115606400.

The previous prime is 256313527. The next prime is 256313569. The reversal of 256313552 is 255313652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17498 + ... + 28614.

Almost surely, 2^256313552 is an apocalyptic number.

256313552 is a gapful number since it is divisible by the number (22) 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 256313552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272969136).

256313552 is an abundant number, since it is smaller than the sum of its proper divisors (289624720).

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

256313552 is a wasteful number, since it uses less digits than its factorization.

256313552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11267 (or 11261 counting only the distinct ones).

The product of its digits is 27000, while the sum is 32.

The square root of 256313552 is about 16009.7955015047. The cubic root of 256313552 is about 635.2195508409.

The spelling of 256313552 in words is "two hundred fifty-six million, three hundred thirteen thousand, five hundred fifty-two".