255149438 has 4 divisors (see below), whose sum is σ = 382724160. Its totient is φ = 127574718.

The previous prime is 255149399. The next prime is 255149449. The reversal of 255149438 is 834941552.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 255149395 and 255149404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63787358 + ... + 63787361.

It is an arithmetic number, because the mean of its divisors is an integer number (95681040).

Almost surely, 2^255149438 is an apocalyptic number.

255149438 is a deficient number, since it is larger than the sum of its proper divisors (127574722).

255149438 is a wasteful number, since it uses less digits than its factorization.

255149438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127574721.

The product of its digits is 172800, while the sum is 41.

The square root of 255149438 is about 15973.3978226300. The cubic root of 255149438 is about 634.2564202086.

The spelling of 255149438 in words is "two hundred fifty-five million, one hundred forty-nine thousand, four hundred thirty-eight".