545012052432521 has 2 divisors, whose sum is σ = 545012052432522. Its totient is φ = 545012052432520.

The previous prime is 545012052432457. The next prime is 545012052432541. The reversal of 545012052432521 is 125234250210545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386608558068496 + 158403494364025 = 19662364^2 + 12585845^2 .

It is a cyclic number.

It is not a de Polignac number, because 545012052432521 - 2⁶ = 545012052432457 is a prime.

It is not a weakly prime, because it can be changed into another prime (545012052432541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272506026216260 + 272506026216261.

It is an arithmetic number, because the mean of its divisors is an integer number (272506026216261).

Almost surely, 2^{545012052432521} is an apocalyptic number.

It is an amenable number.

545012052432521 is a deficient number, since it is larger than the sum of its proper divisors (1).

545012052432521 is an equidigital number, since it uses as much as digits as its factorization.

545012052432521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480000, while the sum is 41.

The spelling of 545012052432521 in words is "five hundred forty-five trillion, twelve billion, fifty-two million, four hundred thirty-two thousand, five hundred twenty-one".