1550143143 has 32 divisors (see below), whose sum is σ = 2350494720. Its totient is φ = 1009232640.

The previous prime is 1550143123. The next prime is 1550143183. The reversal of 1550143143 is 3413410551.

It is a happy number.

1550143143 is a `hidden beast` number, since 15 + 501 + 4 + 3 + 143 = 666.

It is not a de Polignac number, because 1550143143 - 2¹⁰ = 1550142119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550143123) 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 31 ways as a sum of consecutive naturals, for example, 743863 + ... + 745943.

It is an arithmetic number, because the mean of its divisors is an integer number (73452960).

Almost surely, 2^1550143143 is an apocalyptic number.

1550143143 is a deficient number, since it is larger than the sum of its proper divisors (800351577).

1550143143 is a wasteful number, since it uses less digits than its factorization.

1550143143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724 (or 2718 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1550143143 is about 39371.8572460076. The cubic root of 1550143143 is about 1157.3301516740.

Adding to 1550143143 its reverse (3413410551), we get a palindrome (4963553694).

The spelling of 1550143143 in words is "one billion, five hundred fifty million, one hundred forty-three thousand, one hundred forty-three".