55390370573 has 2 divisors, whose sum is σ = 55390370574. Its totient is φ = 55390370572.

The previous prime is 55390370551. The next prime is 55390370593. The reversal of 55390370573 is 37507309355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54949454569 + 440916004 = 234413^2 + 20998^2 .

It is a cyclic number.

It is not a de Polignac number, because 55390370573 - 2¹⁰ = 55390369549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55390370593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27695185286 + 27695185287.

It is an arithmetic number, because the mean of its divisors is an integer number (27695185287).

Almost surely, 2^55390370573 is an apocalyptic number.

It is an amenable number.

55390370573 is a deficient number, since it is larger than the sum of its proper divisors (1).

55390370573 is an equidigital number, since it uses as much as digits as its factorization.

55390370573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1488375, while the sum is 47.

The spelling of 55390370573 in words is "fifty-five billion, three hundred ninety million, three hundred seventy thousand, five hundred seventy-three".