54126320654557 has 2 divisors, whose sum is σ = 54126320654558. Its totient is φ = 54126320654556.

The previous prime is 54126320654489. The next prime is 54126320654569. The reversal of 54126320654557 is 75545602362145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47960763487641 + 6165557166916 = 6925371^2 + 2483054^2 .

It is a cyclic number.

It is not a de Polignac number, because 54126320654557 - 2³¹ = 54124173170909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54126320654498 and 54126320654507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54126320655557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27063160327278 + 27063160327279.

It is an arithmetic number, because the mean of its divisors is an integer number (27063160327279).

Almost surely, 2^{54126320654557} is an apocalyptic number.

It is an amenable number.

54126320654557 is a deficient number, since it is larger than the sum of its proper divisors (1).

54126320654557 is an equidigital number, since it uses as much as digits as its factorization.

54126320654557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240000, while the sum is 55.

The spelling of 54126320654557 in words is "fifty-four trillion, one hundred twenty-six billion, three hundred twenty million, six hundred fifty-four thousand, five hundred fifty-seven".