55051022021287 has 2 divisors, whose sum is σ = 55051022021288. Its totient is φ = 55051022021286.

The previous prime is 55051022021239. The next prime is 55051022021291. The reversal of 55051022021287 is 78212022015055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55051022021287 - 2³⁵ = 55016662282919 is a prime.

It is a super-2 number, since 2×55051022021287² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55051022021587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27525511010643 + 27525511010644.

It is an arithmetic number, because the mean of its divisors is an integer number (27525511010644).

Almost surely, 2^{55051022021287} is an apocalyptic number.

55051022021287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55051022021287 is an equidigital number, since it uses as much as digits as its factorization.

55051022021287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 55051022021287 in words is "fifty-five trillion, fifty-one billion, twenty-two million, twenty-one thousand, two hundred eighty-seven".