255351551 has 32 divisors (see below), whose sum is σ = 322562688. Its totient is φ = 196784640.

The previous prime is 255351527. The next prime is 255351559. The reversal of 255351551 is 155153552.

It is not a de Polignac number, because 255351551 - 2⁶ = 255351487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255351559) 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 31 ways as a sum of consecutive naturals, for example, 871361 + ... + 871653.

It is an arithmetic number, because the mean of its divisors is an integer number (10080084).

Almost surely, 2^255351551 is an apocalyptic number.

255351551 is a deficient number, since it is larger than the sum of its proper divisors (67211137).

255351551 is a wasteful number, since it uses less digits than its factorization.

255351551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its digits is 18750, while the sum is 32.

The square root of 255351551 is about 15979.7231202546. The cubic root of 255351551 is about 634.4238484099.

The spelling of 255351551 in words is "two hundred fifty-five million, three hundred fifty-one thousand, five hundred fifty-one".