255403651 has 2 divisors, whose sum is σ = 255403652. Its totient is φ = 255403650.

The previous prime is 255403627. The next prime is 255403657. The reversal of 255403651 is 156304552.

255403651 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 is a cyclic number.

It is not a de Polignac number, because 255403651 - 2¹⁷ = 255272579 is a prime.

It is not a weakly prime, because it can be changed into another prime (255403657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127701825 + 127701826.

It is an arithmetic number, because the mean of its divisors is an integer number (127701826).

Almost surely, 2^255403651 is an apocalyptic number.

255403651 is a deficient number, since it is larger than the sum of its proper divisors (1).

255403651 is an equidigital number, since it uses as much as digits as its factorization.

255403651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 255403651 is about 15981.3532280593. The cubic root of 255403651 is about 634.4669931577.

Subtracting from 255403651 its reverse (156304552), we obtain a palindrome (99099099).

The spelling of 255403651 in words is "two hundred fifty-five million, four hundred three thousand, six hundred fifty-one".