155223545 has 16 divisors (see below), whose sum is σ = 189903360. Its totient is φ = 121777344.

The previous prime is 155223533. The next prime is 155223587. The reversal of 155223545 is 545322551.

It is a cyclic number.

It is not a de Polignac number, because 155223545 - 2¹⁰ = 155222521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60764 + ... + 63266.

It is an arithmetic number, because the mean of its divisors is an integer number (11868960).

Almost surely, 2^155223545 is an apocalyptic number.

It is an amenable number.

155223545 is a deficient number, since it is larger than the sum of its proper divisors (34679815).

155223545 is a wasteful number, since it uses less digits than its factorization.

155223545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744.

The product of its digits is 30000, while the sum is 32.

The square root of 155223545 is about 12458.8741465672. The cubic root of 155223545 is about 537.4266508888.

The spelling of 155223545 in words is "one hundred fifty-five million, two hundred twenty-three thousand, five hundred forty-five".