256550611 has 2 divisors, whose sum is σ = 256550612. Its totient is φ = 256550610.

The previous prime is 256550527. The next prime is 256550629. The reversal of 256550611 is 116055652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256550611 - 2¹¹ = 256548563 is a prime.

It is not a weakly prime, because it can be changed into another prime (256550641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128275305 + 128275306.

It is an arithmetic number, because the mean of its divisors is an integer number (128275306).

Almost surely, 2^256550611 is an apocalyptic number.

256550611 is a deficient number, since it is larger than the sum of its proper divisors (1).

256550611 is an equidigital number, since it uses as much as digits as its factorization.

256550611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 256550611 is about 16017.1973515968. The cubic root of 256550611 is about 635.4153242209.

The spelling of 256550611 in words is "two hundred fifty-six million, five hundred fifty thousand, six hundred eleven".