255161938 has 8 divisors (see below), whose sum is σ = 383147388. Its totient is φ = 127446144.

The previous prime is 255161917. The next prime is 255161971. The reversal of 255161938 is 839161552.

It can be written as a sum of positive squares in 2 ways, for example, as 254817369 + 344569 = 15963^2 + 587^2 .

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

It is a super-2 number, since 2×255161938² = 130215229207831688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255161938.

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, 65031 + ... + 68842.

Almost surely, 2^255161938 is an apocalyptic number.

255161938 is a deficient number, since it is larger than the sum of its proper divisors (127985450).

255161938 is a wasteful number, since it uses less digits than its factorization.

255161938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134828.

The product of its digits is 64800, while the sum is 40.

The square root of 255161938 is about 15973.7890933867. The cubic root of 255161938 is about 634.2667776366.

The spelling of 255161938 in words is "two hundred fifty-five million, one hundred sixty-one thousand, nine hundred thirty-eight".