55012913287 has 2 divisors, whose sum is σ = 55012913288. Its totient is φ = 55012913286.

The previous prime is 55012913273. The next prime is 55012913303. The reversal of 55012913287 is 78231921055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55012913287 is a prime.

It is a super-2 number, since 2×55012913287² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55012913237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27506456643 + 27506456644.

It is an arithmetic number, because the mean of its divisors is an integer number (27506456644).

Almost surely, 2^55012913287 is an apocalyptic number.

55012913287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55012913287 is an equidigital number, since it uses as much as digits as its factorization.

55012913287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 55012913287 in words is "fifty-five billion, twelve million, nine hundred thirteen thousand, two hundred eighty-seven".