1550552550523 has 4 divisors (see below), whose sum is σ = 1550991431088. Its totient is φ = 1550113669960.

The previous prime is 1550552550517. The next prime is 1550552550583. The reversal of 1550552550523 is 3250552550551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1550552550523 - 2⁹ = 1550552550011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1550552550523.

It is not an unprimeable number, because it can be changed into a prime (1550552550583) 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 in 3 ways as a sum of consecutive naturals, for example, 219434983 + ... + 219442048.

It is an arithmetic number, because the mean of its divisors is an integer number (387747857772).

Almost surely, 2^{1550552550523} is an apocalyptic number.

1550552550523 is a deficient number, since it is larger than the sum of its proper divisors (438880565).

1550552550523 is an equidigital number, since it uses as much as digits as its factorization.

1550552550523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438880564.

The product of its (nonzero) digits is 937500, while the sum is 43.

The spelling of 1550552550523 in words is "one trillion, five hundred fifty billion, five hundred fifty-two million, five hundred fifty thousand, five hundred twenty-three".