256124773 has 2 divisors, whose sum is σ = 256124774. Its totient is φ = 256124772.

The previous prime is 256124699. The next prime is 256124797. The reversal of 256124773 is 377421652.

It is a happy number.

256124773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253510084 + 2614689 = 15922^2 + 1617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256124773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256124173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128062386 + 128062387.

It is an arithmetic number, because the mean of its divisors is an integer number (128062387).

Almost surely, 2^256124773 is an apocalyptic number.

It is an amenable number.

256124773 is a deficient number, since it is larger than the sum of its proper divisors (1).

256124773 is an equidigital number, since it uses as much as digits as its factorization.

256124773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 37.

The square root of 256124773 is about 16003.8986812589. The cubic root of 256124773 is about 635.0635627777.

The spelling of 256124773 in words is "two hundred fifty-six million, one hundred twenty-four thousand, seven hundred seventy-three".