2556421310 has 64 divisors (see below), whose sum is σ = 4947048000. Its totient is φ = 948298752.

The previous prime is 2556421303. The next prime is 2556421313. The reversal of 2556421310 is 131246552.

It is a super-2 number, since 2×2556421310² = 13070579828444232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556421313) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2066012 + ... + 2067248.

It is an arithmetic number, because the mean of its divisors is an integer number (77297625).

Almost surely, 2^2556421310 is an apocalyptic number.

2556421310 is a deficient number, since it is larger than the sum of its proper divisors (2390626690).

2556421310 is a wasteful number, since it uses less digits than its factorization.

2556421310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2556421310 is about 50561.0651588750. The cubic root of 2556421310 is about 1367.3430148871.

Adding to 2556421310 its reverse (131246552), we get a palindrome (2687667862).

The spelling of 2556421310 in words is "two billion, five hundred fifty-six million, four hundred twenty-one thousand, three hundred ten".