6557780254 has 16 divisors (see below), whose sum is σ = 9942313248. Its totient is φ = 3243704832.

The previous prime is 6557780227. The next prime is 6557780267. The reversal of 6557780254 is 4520877556.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6557780198 and 6557780207.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 567159 + ... + 578605.

It is an arithmetic number, because the mean of its divisors is an integer number (621394578).

Almost surely, 2^6557780254 is an apocalyptic number.

6557780254 is a deficient number, since it is larger than the sum of its proper divisors (3384532994).

6557780254 is a wasteful number, since it uses less digits than its factorization.

6557780254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14499.

The product of its (nonzero) digits is 2352000, while the sum is 49.

The square root of 6557780254 is about 80980.1225857309. The cubic root of 6557780254 is about 1871.7691564569.

The spelling of 6557780254 in words is "six billion, five hundred fifty-seven million, seven hundred eighty thousand, two hundred fifty-four".