155312543 has 2 divisors, whose sum is σ = 155312544. Its totient is φ = 155312542.

The previous prime is 155312519. The next prime is 155312557. The reversal of 155312543 is 345213551.

155312543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155312543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155342543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77656271 + 77656272.

It is an arithmetic number, because the mean of its divisors is an integer number (77656272).

Almost surely, 2^155312543 is an apocalyptic number.

155312543 is a deficient number, since it is larger than the sum of its proper divisors (1).

155312543 is an equidigital number, since it uses as much as digits as its factorization.

155312543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 29.

The square root of 155312543 is about 12462.4453057977. The cubic root of 155312543 is about 537.5293431250.

The spelling of 155312543 in words is "one hundred fifty-five million, three hundred twelve thousand, five hundred forty-three".