256762151 has 2 divisors, whose sum is σ = 256762152. Its totient is φ = 256762150.

The previous prime is 256762147. The next prime is 256762153. The reversal of 256762151 is 151267652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256762151 - 2² = 256762147 is a prime.

It is a super-2 number, since 2×256762151² = 131853604372293602, which contains 22 as substring.

Together with 256762153, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256762153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128381075 + 128381076.

It is an arithmetic number, because the mean of its divisors is an integer number (128381076).

Almost surely, 2^256762151 is an apocalyptic number.

256762151 is a deficient number, since it is larger than the sum of its proper divisors (1).

256762151 is an equidigital number, since it uses as much as digits as its factorization.

256762151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 35.

The square root of 256762151 is about 16023.7995182166. The cubic root of 256762151 is about 635.5899211288.

The spelling of 256762151 in words is "two hundred fifty-six million, seven hundred sixty-two thousand, one hundred fifty-one".