1555383150133 has 4 divisors (see below), whose sum is σ = 1555433253088. Its totient is φ = 1555333047180.

The previous prime is 1555383150127. The next prime is 1555383150137. The reversal of 1555383150133 is 3310513835551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1555383150133 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 1555383150133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555383150137) 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 in 3 ways as a sum of consecutive naturals, for example, 25004883 + ... + 25067008.

It is an arithmetic number, because the mean of its divisors is an integer number (388858313272).

Almost surely, 2^{1555383150133} is an apocalyptic number.

It is an amenable number.

1555383150133 is a deficient number, since it is larger than the sum of its proper divisors (50102955).

1555383150133 is an equidigital number, since it uses as much as digits as its factorization.

1555383150133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50102954.

The product of its (nonzero) digits is 405000, while the sum is 43.

Adding to 1555383150133 its reverse (3310513835551), we get a palindrome (4865896985684).

The spelling of 1555383150133 in words is "one trillion, five hundred fifty-five billion, three hundred eighty-three million, one hundred fifty thousand, one hundred thirty-three".