155320543 has 12 divisors (see below), whose sum is σ = 182065752. Its totient is φ = 132110160.

The previous prime is 155320511. The next prime is 155320547. The reversal of 155320543 is 345023551.

It is not a de Polignac number, because 155320543 - 2⁵ = 155320511 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 (155320547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5680 + ... + 18517.

It is an arithmetic number, because the mean of its divisors is an integer number (15172146).

Almost surely, 2^155320543 is an apocalyptic number.

155320543 is a deficient number, since it is larger than the sum of its proper divisors (26745209).

155320543 is a wasteful number, since it uses less digits than its factorization.

155320543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24342 (or 24335 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 155320543 is about 12462.7662659620. The cubic root of 155320543 is about 537.5385721733.

The spelling of 155320543 in words is "one hundred fifty-five million, three hundred twenty thousand, five hundred forty-three".