255231554553 has 16 divisors (see below), whose sum is σ = 394560858240. Its totient is φ = 162756353232.

The previous prime is 255231554549. The next prime is 255231554561. The reversal of 255231554553 is 355455132552.

It is a happy number.

255231554553 is a `hidden beast` number, since 2 + 5 + 52 + 3 + 1 + 5 + 545 + 53 = 666.

It is not a de Polignac number, because 255231554553 - 2² = 255231554549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255231554499 and 255231554508.

It is not an unprimeable number, because it can be changed into a prime (255231554563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205499826 + ... + 205501067.

It is an arithmetic number, because the mean of its divisors is an integer number (24660053640).

Almost surely, 2^255231554553 is an apocalyptic number.

255231554553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

255231554553 is a deficient number, since it is larger than the sum of its proper divisors (139329303687).

255231554553 is a wasteful number, since it uses less digits than its factorization.

255231554553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411000925 (or 411000919 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 45.

The spelling of 255231554553 in words is "two hundred fifty-five billion, two hundred thirty-one million, five hundred fifty-four thousand, five hundred fifty-three".