2556212654 has 4 divisors (see below), whose sum is σ = 3834318984. Its totient is φ = 1278106326.

The previous prime is 2556212653. The next prime is 2556212677. The reversal of 2556212654 is 4562126552.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556212653) by changing a digit.

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 as a sum of consecutive naturals, namely, 639053162 + ... + 639053165.

It is an arithmetic number, because the mean of its divisors is an integer number (958579746).

Almost surely, 2^2556212654 is an apocalyptic number.

2556212654 is a deficient number, since it is larger than the sum of its proper divisors (1278106330).

2556212654 is a wasteful number, since it uses less digits than its factorization.

2556212654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278106329.

The product of its digits is 144000, while the sum is 38.

The square root of 2556212654 is about 50559.0017108724. The cubic root of 2556212654 is about 1367.3058128702.

The spelling of 2556212654 in words is "two billion, five hundred fifty-six million, two hundred twelve thousand, six hundred fifty-four".