55747567553 has 2 divisors, whose sum is σ = 55747567554. Its totient is φ = 55747567552.

The previous prime is 55747567523. The next prime is 55747567559. The reversal of 55747567553 is 35576574755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55725739969 + 21827584 = 236063^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 55747567553 - 2⁸ = 55747567297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55747567492 and 55747567501.

It is not a weakly prime, because it can be changed into another prime (55747567559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27873783776 + 27873783777.

It is an arithmetic number, because the mean of its divisors is an integer number (27873783777).

Almost surely, 2^55747567553 is an apocalyptic number.

It is an amenable number.

55747567553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55747567553 is an equidigital number, since it uses as much as digits as its factorization.

55747567553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77175000, while the sum is 59.

The spelling of 55747567553 in words is "fifty-five billion, seven hundred forty-seven million, five hundred sixty-seven thousand, five hundred fifty-three".