255057187 has 32 divisors (see below), whose sum is σ = 328333824. Its totient is φ = 192364800.

The previous prime is 255057167. The next prime is 255057193. The reversal of 255057187 is 781750552.

It is a cyclic number.

It is not a de Polignac number, because 255057187 - 2¹⁹ = 254532899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255057107) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 545928 + ... + 546394.

It is an arithmetic number, because the mean of its divisors is an integer number (10260432).

Almost surely, 2^255057187 is an apocalyptic number.

255057187 is a deficient number, since it is larger than the sum of its proper divisors (73276637).

255057187 is a wasteful number, since it uses less digits than its factorization.

With its successor (255057188) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (699).

255057187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699.

The product of its (nonzero) digits is 98000, while the sum is 40.

The square root of 255057187 is about 15970.5099167184. The cubic root of 255057187 is about 634.1799710990.

The spelling of 255057187 in words is "two hundred fifty-five million, fifty-seven thousand, one hundred eighty-seven".