55434220202531 has 2 divisors, whose sum is σ = 55434220202532. Its totient is φ = 55434220202530.

The previous prime is 55434220202497. The next prime is 55434220202533. The reversal of 55434220202531 is 13520202243455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55434220202531 is a prime.

It is a super-2 number, since 2×55434220202531² (a number of 28 digits) contains 22 as substring.

Together with 55434220202533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55434220202533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27717110101265 + 27717110101266.

It is an arithmetic number, because the mean of its divisors is an integer number (27717110101266).

Almost surely, 2^{55434220202531} is an apocalyptic number.

55434220202531 is a deficient number, since it is larger than the sum of its proper divisors (1).

55434220202531 is an equidigital number, since it uses as much as digits as its factorization.

55434220202531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 55434220202531 its reverse (13520202243455), we get a palindrome (68954422445986).

The spelling of 55434220202531 in words is "fifty-five trillion, four hundred thirty-four billion, two hundred twenty million, two hundred two thousand, five hundred thirty-one".