55253784491 has 2 divisors, whose sum is σ = 55253784492. Its totient is φ = 55253784490.

The previous prime is 55253784479. The next prime is 55253784533. The reversal of 55253784491 is 19448735255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55253784491 - 2¹⁰ = 55253783467 is a prime.

It is not a weakly prime, because it can be changed into another prime (55253784451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626892245 + 27626892246.

It is an arithmetic number, because the mean of its divisors is an integer number (27626892246).

Almost surely, 2^55253784491 is an apocalyptic number.

55253784491 is a deficient number, since it is larger than the sum of its proper divisors (1).

55253784491 is an equidigital number, since it uses as much as digits as its factorization.

55253784491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048000, while the sum is 53.

The spelling of 55253784491 in words is "fifty-five billion, two hundred fifty-three million, seven hundred eighty-four thousand, four hundred ninety-one".