155122045 has 8 divisors (see below), whose sum is σ = 200465496. Its totient is φ = 114551616.

The previous prime is 155122021. The next prime is 155122063. The reversal of 155122045 is 540221551.

It can be written as a sum of positive squares in 4 ways, for example, as 1907161 + 153214884 = 1381^2 + 12378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155122045 - 2⁷ = 155121917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193182 + ... + 1193311.

It is an arithmetic number, because the mean of its divisors is an integer number (25058187).

Almost surely, 2^155122045 is an apocalyptic number.

It is an amenable number.

155122045 is a deficient number, since it is larger than the sum of its proper divisors (45343451).

155122045 is a wasteful number, since it uses less digits than its factorization.

155122045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386511.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 155122045 is about 12454.8000786845. The cubic root of 155122045 is about 537.3094850316.

Adding to 155122045 its reverse (540221551), we get a palindrome (695343596).

The spelling of 155122045 in words is "one hundred fifty-five million, one hundred twenty-two thousand, forty-five".