255606463 has 4 divisors (see below), whose sum is σ = 292121680. Its totient is φ = 219091248.

The previous prime is 255606443. The next prime is 255606469. The reversal of 255606463 is 364606552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255606463 - 2⁵ = 255606431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255606469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18257598 + ... + 18257611.

It is an arithmetic number, because the mean of its divisors is an integer number (73030420).

Almost surely, 2^255606463 is an apocalyptic number.

255606463 is a deficient number, since it is larger than the sum of its proper divisors (36515217).

255606463 is an equidigital number, since it uses as much as digits as its factorization.

255606463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36515216.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 255606463 is about 15987.6972388146. The cubic root of 255606463 is about 634.6348887928.

It can be divided in two parts, 25560 and 6463, that added together give a palindrome (32023).

The spelling of 255606463 in words is "two hundred fifty-five million, six hundred six thousand, four hundred sixty-three".