255505052981 has 32 divisors (see below), whose sum is σ = 273926016000. Its totient is φ = 237761061120.

The previous prime is 255505052969. The next prime is 255505052989. The reversal of 255505052981 is 189250505552.

It is not a de Polignac number, because 255505052981 - 2¹⁴ = 255505036597 is a prime.

It is a super-2 number, since 2×255505052981² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255505052989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146756771 + ... + 146758511.

It is an arithmetic number, because the mean of its divisors is an integer number (8560188000).

Almost surely, 2^255505052981 is an apocalyptic number.

It is an amenable number.

255505052981 is a deficient number, since it is larger than the sum of its proper divisors (18420963019).

255505052981 is a wasteful number, since it uses less digits than its factorization.

255505052981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549.

The product of its (nonzero) digits is 900000, while the sum is 47.

The spelling of 255505052981 in words is "two hundred fifty-five billion, five hundred five million, fifty-two thousand, nine hundred eighty-one".