55455632231 has 2 divisors, whose sum is σ = 55455632232. Its totient is φ = 55455632230.

The previous prime is 55455632213. The next prime is 55455632263. The reversal of 55455632231 is 13223655455.

Together with previous prime (55455632213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55455632231 - 2¹⁰ = 55455631207 is a prime.

It is a super-2 number, since 2×55455632231² (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 (55455632131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27727816115 + 27727816116.

It is an arithmetic number, because the mean of its divisors is an integer number (27727816116).

Almost surely, 2^55455632231 is an apocalyptic number.

55455632231 is a deficient number, since it is larger than the sum of its proper divisors (1).

55455632231 is an equidigital number, since it uses as much as digits as its factorization.

55455632231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 41.

The spelling of 55455632231 in words is "fifty-five billion, four hundred fifty-five million, six hundred thirty-two thousand, two hundred thirty-one".