55501531823 has 2 divisors, whose sum is σ = 55501531824. Its totient is φ = 55501531822.

The previous prime is 55501531747. The next prime is 55501531829. The reversal of 55501531823 is 32813510555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55501531823 - 2¹⁶ = 55501466287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55501531829) 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, 27750765911 + 27750765912.

It is an arithmetic number, because the mean of its divisors is an integer number (27750765912).

Almost surely, 2^55501531823 is an apocalyptic number.

55501531823 is a deficient number, since it is larger than the sum of its proper divisors (1).

55501531823 is an equidigital number, since it uses as much as digits as its factorization.

55501531823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 55501531823 in words is "fifty-five billion, five hundred one million, five hundred thirty-one thousand, eight hundred twenty-three".