55253784533 has 2 divisors, whose sum is σ = 55253784534. Its totient is φ = 55253784532.

The previous prime is 55253784491. The next prime is 55253784541. The reversal of 55253784533 is 33548735255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36995829649 + 18257954884 = 192343^2 + 135122^2 .

It is a cyclic number.

It is not a de Polignac number, because 55253784533 - 2¹⁰ = 55253783509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55253714533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626892266 + 27626892267.

It is an arithmetic number, because the mean of its divisors is an integer number (27626892267).

Almost surely, 2^55253784533 is an apocalyptic number.

It is an amenable number.

55253784533 is a deficient number, since it is larger than the sum of its proper divisors (1).

55253784533 is an equidigital number, since it uses as much as digits as its factorization.

55253784533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560000, while the sum is 50.

The spelling of 55253784533 in words is "fifty-five billion, two hundred fifty-three million, seven hundred eighty-four thousand, five hundred thirty-three".