255634447 has 2 divisors, whose sum is σ = 255634448. Its totient is φ = 255634446.

The previous prime is 255634429. The next prime is 255634453. The reversal of 255634447 is 744436552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255634447 is a prime.

It is equal to p_13970596 and since 255634447 and 13970596 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255634747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127817223 + 127817224.

It is an arithmetic number, because the mean of its divisors is an integer number (127817224).

Almost surely, 2^255634447 is an apocalyptic number.

255634447 is a deficient number, since it is larger than the sum of its proper divisors (1).

255634447 is an equidigital number, since it uses as much as digits as its factorization.

255634447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 40.

The square root of 255634447 is about 15988.5723878025. The cubic root of 255634447 is about 634.6580480593.

The spelling of 255634447 in words is "two hundred fifty-five million, six hundred thirty-four thousand, four hundred forty-seven".