1550004143 has 4 divisors (see below), whose sum is σ = 1550303040. Its totient is φ = 1549705248.

The previous prime is 1550004119. The next prime is 1550004161. The reversal of 1550004143 is 3414000551.

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 1550004143 - 2¹⁴ = 1549987759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550004103) 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, 141530 + ... + 152087.

It is an arithmetic number, because the mean of its divisors is an integer number (387575760).

Almost surely, 2^1550004143 is an apocalyptic number.

1550004143 is a deficient number, since it is larger than the sum of its proper divisors (298897).

1550004143 is an equidigital number, since it uses as much as digits as its factorization.

1550004143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298896.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1550004143 is about 39370.0919861765. The cubic root of 1550004143 is about 1157.2955583741.

Adding to 1550004143 its reverse (3414000551), we get a palindrome (4964004694).

The spelling of 1550004143 in words is "one billion, five hundred fifty million, four thousand, one hundred forty-three".