255780331 has 8 divisors (see below), whose sum is σ = 258387584. Its totient is φ = 253186560.

The previous prime is 255780323. The next prime is 255780341. The reversal of 255780331 is 133087552.

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

It is a cyclic number.

It is not a de Polignac number, because 255780331 - 2³ = 255780323 is a prime.

It is a super-2 number, since 2×255780331² = 130847155452939122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255780341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37195 + ... + 43531.

It is an arithmetic number, because the mean of its divisors is an integer number (32298448).

Almost surely, 2^255780331 is an apocalyptic number.

255780331 is a deficient number, since it is larger than the sum of its proper divisors (2607253).

255780331 is a wasteful number, since it uses less digits than its factorization.

255780331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 255780331 is about 15993.1338705083. The cubic root of 255780331 is about 634.7787527728.

The spelling of 255780331 in words is "two hundred fifty-five million, seven hundred eighty thousand, three hundred thirty-one".