155420543 has 2 divisors, whose sum is σ = 155420544. Its totient is φ = 155420542.

The previous prime is 155420527. The next prime is 155420549. The reversal of 155420543 is 345024551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155420543 - 2⁴ = 155420527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155420549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77710271 + 77710272.

It is an arithmetic number, because the mean of its divisors is an integer number (77710272).

Almost surely, 2^155420543 is an apocalyptic number.

155420543 is a deficient number, since it is larger than the sum of its proper divisors (1).

155420543 is an equidigital number, since it uses as much as digits as its factorization.

155420543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 155420543 is about 12466.7775708079. Note that the first 3 decimals coincide. The cubic root of 155420543 is about 537.6539085484.

The spelling of 155420543 in words is "one hundred fifty-five million, four hundred twenty thousand, five hundred forty-three".