255696538 has 8 divisors (see below), whose sum is σ = 396770580. Its totient is φ = 123439680.

The previous prime is 255696517. The next prime is 255696557. The reversal of 255696538 is 835696552.

It can be written as a sum of positive squares in 2 ways, for example, as 251000649 + 4695889 = 15843^2 + 2167^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 255696491 and 255696500.

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, 2204223 + ... + 2204338.

Almost surely, 2^255696538 is an apocalyptic number.

255696538 is a deficient number, since it is larger than the sum of its proper divisors (141074042).

255696538 is a wasteful number, since it uses less digits than its factorization.

255696538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408592.

The product of its digits is 1944000, while the sum is 49.

The square root of 255696538 is about 15990.5140004942. The cubic root of 255696538 is about 634.7094278887.

The spelling of 255696538 in words is "two hundred fifty-five million, six hundred ninety-six thousand, five hundred thirty-eight".