56574061127621 has 2 divisors, whose sum is σ = 56574061127622. Its totient is φ = 56574061127620.

The previous prime is 56574061127603. The next prime is 56574061127629. The reversal of 56574061127621 is 12672116047565.

56574061127621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52798229205121 + 3775831922500 = 7266239^2 + 1943150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56574061127621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56574061127629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28287030563810 + 28287030563811.

It is an arithmetic number, because the mean of its divisors is an integer number (28287030563811).

Almost surely, 2^{56574061127621} is an apocalyptic number.

It is an amenable number.

56574061127621 is a deficient number, since it is larger than the sum of its proper divisors (1).

56574061127621 is an equidigital number, since it uses as much as digits as its factorization.

56574061127621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 56574061127621 in words is "fifty-six trillion, five hundred seventy-four billion, sixty-one million, one hundred twenty-seven thousand, six hundred twenty-one".