256952743 has 4 divisors (see below), whose sum is σ = 257019048. Its totient is φ = 256886440.

The previous prime is 256952681. The next prime is 256952771. The reversal of 256952743 is 347259652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256952743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256952743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256952543) 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, 26953 + ... + 35218.

It is an arithmetic number, because the mean of its divisors is an integer number (64254762).

Almost surely, 2^256952743 is an apocalyptic number.

256952743 is a deficient number, since it is larger than the sum of its proper divisors (66305).

256952743 is an equidigital number, since it uses as much as digits as its factorization.

256952743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66304.

The product of its digits is 453600, while the sum is 43.

The square root of 256952743 is about 16029.7455687856. The cubic root of 256952743 is about 635.7471462661.

The spelling of 256952743 in words is "two hundred fifty-six million, nine hundred fifty-two thousand, seven hundred forty-three".