255170928553 has 4 divisors (see below), whose sum is σ = 255404388868. Its totient is φ = 254937468240.

The previous prime is 255170928547. The next prime is 255170928647. The reversal of 255170928553 is 355829071552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 250667444889 + 4503483664 = 500667^2 + 67108^2 .

It is a cyclic number.

It is not a de Polignac number, because 255170928553 - 2⁵ = 255170928521 is a prime.

It is a super-2 number, since 2×255170928553² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255170928553.

It is not an unprimeable number, because it can be changed into a prime (255170928253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116728518 + ... + 116730703.

It is an arithmetic number, because the mean of its divisors is an integer number (63851097217).

Almost surely, 2^255170928553 is an apocalyptic number.

It is an amenable number.

255170928553 is a deficient number, since it is larger than the sum of its proper divisors (233460315).

255170928553 is a wasteful number, since it uses less digits than its factorization.

255170928553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233460314.

The product of its (nonzero) digits is 3780000, while the sum is 52.

The spelling of 255170928553 in words is "two hundred fifty-five billion, one hundred seventy million, nine hundred twenty-eight thousand, five hundred fifty-three".