55038840553 has 2 divisors, whose sum is σ = 55038840554. Its totient is φ = 55038840552.

The previous prime is 55038840529. The next prime is 55038840557. The reversal of 55038840553 is 35504883055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28035148969 + 27003691584 = 167437^2 + 164328^2 .

It is a cyclic number.

It is not a de Polignac number, because 55038840553 - 2³³ = 46448905961 is a prime.

It is not a weakly prime, because it can be changed into another prime (55038840557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27519420276 + 27519420277.

It is an arithmetic number, because the mean of its divisors is an integer number (27519420277).

Almost surely, 2^55038840553 is an apocalyptic number.

It is an amenable number.

55038840553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55038840553 is an equidigital number, since it uses as much as digits as its factorization.

55038840553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 55038840553 in words is "fifty-five billion, thirty-eight million, eight hundred forty thousand, five hundred fifty-three".