55560131287 has 2 divisors, whose sum is σ = 55560131288. Its totient is φ = 55560131286.

The previous prime is 55560131281. The next prime is 55560131317. The reversal of 55560131287 is 78213106555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55560131287 - 2²⁷ = 55425913559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55560131281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780065643 + 27780065644.

It is an arithmetic number, because the mean of its divisors is an integer number (27780065644).

Almost surely, 2^55560131287 is an apocalyptic number.

55560131287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55560131287 is an equidigital number, since it uses as much as digits as its factorization.

55560131287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 55560131287 in words is "fifty-five billion, five hundred sixty million, one hundred thirty-one thousand, two hundred eighty-seven".