256116547 has 8 divisors (see below), whose sum is σ = 258318000. Its totient is φ = 253921824.

The previous prime is 256116541. The next prime is 256116559. The reversal of 256116547 is 745611652.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 256116547 - 2²³ = 247727939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256116541) 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, 99604 + ... + 102142.

It is an arithmetic number, because the mean of its divisors is an integer number (32289750).

Almost surely, 2^256116547 is an apocalyptic number.

256116547 is a deficient number, since it is larger than the sum of its proper divisors (2201453).

256116547 is a wasteful number, since it uses less digits than its factorization.

256116547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365.

The product of its digits is 50400, while the sum is 37.

The square root of 256116547 is about 16003.6416793179. The cubic root of 256116547 is about 635.0567638925.

The spelling of 256116547 in words is "two hundred fifty-six million, one hundred sixteen thousand, five hundred forty-seven".