255215530 has 8 divisors (see below), whose sum is σ = 459387972. Its totient is φ = 102086208.

The previous prime is 255215507. The next prime is 255215539. The reversal of 255215530 is 35512552.

It can be written as a sum of positive squares in 2 ways, for example, as 254817369 + 398161 = 15963^2 + 631^2 .

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

It is not an unprimeable number, because it can be changed into a prime (255215539) 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, 12760767 + ... + 12760786.

Almost surely, 2^255215530 is an apocalyptic number.

255215530 is a deficient number, since it is larger than the sum of its proper divisors (204172442).

255215530 is a wasteful number, since it uses less digits than its factorization.

255215530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25521560.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 255215530 is about 15975.4665033607. The cubic root of 255215530 is about 634.3111798254.

The spelling of 255215530 in words is "two hundred fifty-five million, two hundred fifteen thousand, five hundred thirty".