55053356330521 has 2 divisors, whose sum is σ = 55053356330522. Its totient is φ = 55053356330520.

The previous prime is 55053356330471. The next prime is 55053356330549. The reversal of 55053356330521 is 12503365335055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41742453505600 + 13310902824921 = 6460840^2 + 3648411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55053356330521 is a prime.

It is a super-2 number, since 2×55053356330521² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55053356330561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27526678165260 + 27526678165261.

It is an arithmetic number, because the mean of its divisors is an integer number (27526678165261).

Almost surely, 2^{55053356330521} is an apocalyptic number.

It is an amenable number.

55053356330521 is a deficient number, since it is larger than the sum of its proper divisors (1).

55053356330521 is an equidigital number, since it uses as much as digits as its factorization.

55053356330521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3037500, while the sum is 46.

The spelling of 55053356330521 in words is "fifty-five trillion, fifty-three billion, three hundred fifty-six million, three hundred thirty thousand, five hundred twenty-one".