155288543 has 4 divisors (see below), whose sum is σ = 156277800. Its totient is φ = 154299288.

The previous prime is 155288537. The next prime is 155288563. The reversal of 155288543 is 345882551.

155288543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 155288543 - 2⁴ = 155288527 is a prime.

It is a super-2 number, since 2×155288543² = 48229063174125698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155288543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155288563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494393 + ... + 494706.

It is an arithmetic number, because the mean of its divisors is an integer number (39069450).

Almost surely, 2^155288543 is an apocalyptic number.

155288543 is a deficient number, since it is larger than the sum of its proper divisors (989257).

155288543 is an equidigital number, since it uses as much as digits as its factorization.

155288543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989256.

The product of its digits is 192000, while the sum is 41.

The square root of 155288543 is about 12461.4823757047. The cubic root of 155288543 is about 537.5016540782.

The spelling of 155288543 in words is "one hundred fifty-five million, two hundred eighty-eight thousand, five hundred forty-three".