256546135 has 4 divisors (see below), whose sum is σ = 307855368. Its totient is φ = 205236904.

The previous prime is 256546109. The next prime is 256546139. The reversal of 256546135 is 531645652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256546135 - 2²³ = 248157527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256546094 and 256546103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256546139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25654609 + ... + 25654618.

It is an arithmetic number, because the mean of its divisors is an integer number (76963842).

Almost surely, 2^256546135 is an apocalyptic number.

256546135 is a deficient number, since it is larger than the sum of its proper divisors (51309233).

256546135 is an equidigital number, since it uses as much as digits as its factorization.

256546135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51309232.

The product of its digits is 108000, while the sum is 37.

The square root of 256546135 is about 16017.0576261684. The cubic root of 256546135 is about 635.4116288675.

The spelling of 256546135 in words is "two hundred fifty-six million, five hundred forty-six thousand, one hundred thirty-five".