255508667 has 4 divisors (see below), whose sum is σ = 256085880. Its totient is φ = 254931456.

The previous prime is 255508663. The next prime is 255508681. The reversal of 255508667 is 766805552.

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 255508667 - 2² = 255508663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255508663) 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, 287942 + ... + 288827.

It is an arithmetic number, because the mean of its divisors is an integer number (64021470).

Almost surely, 2^255508667 is an apocalyptic number.

255508667 is a deficient number, since it is larger than the sum of its proper divisors (577213).

255508667 is an equidigital number, since it uses as much as digits as its factorization.

255508667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577212.

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 255508667 is about 15984.6384694806. The cubic root of 255508667 is about 634.5539405648.

The spelling of 255508667 in words is "two hundred fifty-five million, five hundred eight thousand, six hundred sixty-seven".