256535353 has 8 divisors (see below), whose sum is σ = 273385728. Its totient is φ = 240159744.

The previous prime is 256535351. The next prime is 256535381. The reversal of 256535353 is 353535652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256535353 - 2¹ = 256535351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256535351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117576 + ... + 119737.

It is an arithmetic number, because the mean of its divisors is an integer number (34173216).

Almost surely, 2^256535353 is an apocalyptic number.

256535353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

256535353 is a deficient number, since it is larger than the sum of its proper divisors (16850375).

256535353 is a wasteful number, since it uses less digits than its factorization.

256535353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237383.

The product of its digits is 202500, while the sum is 37.

The square root of 256535353 is about 16016.7210439590. The cubic root of 256535353 is about 635.4027271493.

The spelling of 256535353 in words is "two hundred fifty-six million, five hundred thirty-five thousand, three hundred fifty-three".