155543545 has 16 divisors (see below), whose sum is σ = 192986640. Its totient is φ = 120268800.

The previous prime is 155543543. The next prime is 155543551. The reversal of 155543545 is 545345551.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1585081 + 153958464 = 1259^2 + 12408^2 .

It is not a de Polignac number, because 155543545 - 2¹ = 155543543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155543543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18865 + ... + 25825.

It is an arithmetic number, because the mean of its divisors is an integer number (12061665).

Almost surely, 2^155543545 is an apocalyptic number.

It is an amenable number.

155543545 is a deficient number, since it is larger than the sum of its proper divisors (37443095).

155543545 is a wasteful number, since it uses less digits than its factorization.

155543545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116.

The product of its digits is 150000, while the sum is 37.

The square root of 155543545 is about 12471.7097865529. The cubic root of 155543545 is about 537.7957067655.

The spelling of 155543545 in words is "one hundred fifty-five million, five hundred forty-three thousand, five hundred forty-five".