155503045 has 8 divisors (see below), whose sum is σ = 191647224. Its totient is φ = 121040064.

The previous prime is 155503031. The next prime is 155503109. The reversal of 155503045 is 540305551.

It can be written as a sum of positive squares in 4 ways, for example, as 50665924 + 104837121 = 7118^2 + 10239^2 .

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 155503045 - 2⁷ = 155502917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420094 + ... + 420463.

It is an arithmetic number, because the mean of its divisors is an integer number (23955903).

Almost surely, 2^155503045 is an apocalyptic number.

It is an amenable number.

155503045 is a deficient number, since it is larger than the sum of its proper divisors (36144179).

155503045 is an equidigital number, since it uses as much as digits as its factorization.

155503045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840599.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 155503045 is about 12470.0860061188. The cubic root of 155503045 is about 537.7490261252.

Adding to 155503045 its reverse (540305551), we get a palindrome (695808596).

The spelling of 155503045 in words is "one hundred fifty-five million, five hundred three thousand, forty-five".