256152047 has 2 divisors, whose sum is σ = 256152048. Its totient is φ = 256152046.

The previous prime is 256152037. The next prime is 256152067. The reversal of 256152047 is 740251652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256152047 - 2⁴ = 256152031 is a prime.

It is a super-2 number, since 2×256152047² = 131227742364580418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256152037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128076023 + 128076024.

It is an arithmetic number, because the mean of its divisors is an integer number (128076024).

Almost surely, 2^256152047 is an apocalyptic number.

256152047 is a deficient number, since it is larger than the sum of its proper divisors (1).

256152047 is an equidigital number, since it uses as much as digits as its factorization.

256152047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 256152047 is about 16004.7507634452. The cubic root of 256152047 is about 635.0861040163.

The spelling of 256152047 in words is "two hundred fifty-six million, one hundred fifty-two thousand, forty-seven".