255780531 has 16 divisors (see below), whose sum is σ = 380293920. Its totient is φ = 169908480.

The previous prime is 255780529. The next prime is 255780557. The reversal of 255780531 is 135087552.

255780531 is a `hidden beast` number, since 2 + 55 + 78 + 0 + 531 = 666.

It is not a de Polignac number, because 255780531 - 2¹ = 255780529 is a prime.

It is a super-2 number, since 2×255780531² = 130847360077283922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255780431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9270 + ... + 24443.

It is an arithmetic number, because the mean of its divisors is an integer number (23768370).

Almost surely, 2^255780531 is an apocalyptic number.

255780531 is a deficient number, since it is larger than the sum of its proper divisors (124513389).

255780531 is a wasteful number, since it uses less digits than its factorization.

255780531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34003 (or 33997 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 255780531 is about 15993.1401231903. The cubic root of 255780531 is about 634.7789182217.

The spelling of 255780531 in words is "two hundred fifty-five million, seven hundred eighty thousand, five hundred thirty-one".