255155506 has 8 divisors (see below), whose sum is σ = 383869980. Its totient is φ = 127198848.

The previous prime is 255155477. The next prime is 255155531. The reversal of 255155506 is 605551552.

It can be written as a sum of positive squares in 2 ways, for example, as 253096281 + 2059225 = 15909^2 + 1435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188611 + ... + 189958.

Almost surely, 2^255155506 is an apocalyptic number.

255155506 is a deficient number, since it is larger than the sum of its proper divisors (128714474).

255155506 is a wasteful number, since it uses less digits than its factorization.

255155506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378908.

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 255155506 is about 15973.5877623031. The cubic root of 255155506 is about 634.2614481607.

The spelling of 255155506 in words is "two hundred fifty-five million, one hundred fifty-five thousand, five hundred six".