254978556 has 144 divisors (see below), whose sum is σ = 754588800. Its totient is φ = 66552192.

The previous prime is 254978513. The next prime is 254978567. The reversal of 254978556 is 655879452.

It is a junction number, because it is equal to n+sod(n) for n = 254978499 and 254978508.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 323595 + ... + 324381.

It is an arithmetic number, because the mean of its divisors is an integer number (5240200).

Almost surely, 2^254978556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 254978556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377294400).

254978556 is an abundant number, since it is smaller than the sum of its proper divisors (499610244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

254978556 is a wasteful number, since it uses less digits than its factorization.

254978556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 847 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 51.

The square root of 254978556 is about 15968.0479708698. The cubic root of 254978556 is about 634.1147944339.

The spelling of 254978556 in words is "two hundred fifty-four million, nine hundred seventy-eight thousand, five hundred fifty-six".