55532444857 has 2 divisors, whose sum is σ = 55532444858. Its totient is φ = 55532444856.

The previous prime is 55532444831. The next prime is 55532444923. The reversal of 55532444857 is 75844423555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48948907536 + 6583537321 = 221244^2 + 81139^2 .

It is a cyclic number.

It is not a de Polignac number, because 55532444857 - 2¹⁹ = 55531920569 is a prime.

It is not a weakly prime, because it can be changed into another prime (55532444057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766222428 + 27766222429.

It is an arithmetic number, because the mean of its divisors is an integer number (27766222429).

Almost surely, 2^55532444857 is an apocalyptic number.

It is an amenable number.

55532444857 is a deficient number, since it is larger than the sum of its proper divisors (1).

55532444857 is an equidigital number, since it uses as much as digits as its factorization.

55532444857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440000, while the sum is 52.

The spelling of 55532444857 in words is "fifty-five billion, five hundred thirty-two million, four hundred forty-four thousand, eight hundred fifty-seven".