155053143 has 64 divisors (see below), whose sum is σ = 279521280. Its totient is φ = 83026944.

The previous prime is 155053123. The next prime is 155053147. The reversal of 155053143 is 341350551.

155053143 is a `hidden beast` number, since 15 + 505 + 3 + 143 = 666.

It is not a de Polignac number, because 155053143 - 2¹⁶ = 154987607 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 (155053147) 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 63 ways as a sum of consecutive naturals, for example, 230055 + ... + 230727.

It is an arithmetic number, because the mean of its divisors is an integer number (4367520).

Almost surely, 2^155053143 is an apocalyptic number.

155053143 is a deficient number, since it is larger than the sum of its proper divisors (124468137).

155053143 is a wasteful number, since it uses less digits than its factorization.

155053143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 155053143 is about 12452.0336893216. The cubic root of 155053143 is about 537.2299193345.

The spelling of 155053143 in words is "one hundred fifty-five million, fifty-three thousand, one hundred forty-three".