3556056421 has 8 divisors (see below), whose sum is σ = 3652914464. Its totient is φ = 3459237840.

The previous prime is 3556056377. The next prime is 3556056443. The reversal of 3556056421 is 1246506553.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3556056421 - 2⁷ = 3556056293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556056451) 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 7 ways as a sum of consecutive naturals, for example, 324766 + ... + 335536.

It is an arithmetic number, because the mean of its divisors is an integer number (456614308).

Almost surely, 2^3556056421 is an apocalyptic number.

It is an amenable number.

3556056421 is a deficient number, since it is larger than the sum of its proper divisors (96858043).

3556056421 is a wasteful number, since it uses less digits than its factorization.

3556056421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19731.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 3556056421 is about 59632.6791365271. The cubic root of 3556056421 is about 1526.3573218487.

The spelling of 3556056421 in words is "three billion, five hundred fifty-six million, fifty-six thousand, four hundred twenty-one".