55513220453 has 2 divisors, whose sum is σ = 55513220454. Its totient is φ = 55513220452.

The previous prime is 55513220437. The next prime is 55513220479. The reversal of 55513220453 is 35402231555.

55513220453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37691504449 + 17821716004 = 194143^2 + 133498^2 .

It is a cyclic number.

It is not a de Polignac number, because 55513220453 - 2⁴ = 55513220437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55513220053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756610226 + 27756610227.

It is an arithmetic number, because the mean of its divisors is an integer number (27756610227).

Almost surely, 2^55513220453 is an apocalyptic number.

It is an amenable number.

55513220453 is a deficient number, since it is larger than the sum of its proper divisors (1).

55513220453 is an equidigital number, since it uses as much as digits as its factorization.

55513220453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 55513220453 in words is "fifty-five billion, five hundred thirteen million, two hundred twenty thousand, four hundred fifty-three".