45123305 has 8 divisors (see below), whose sum is σ = 54385800. Its totient is φ = 35940096.

The previous prime is 45123293. The next prime is 45123307. The reversal of 45123305 is 50332154.

It can be written as a sum of positive squares in 4 ways, for example, as 14531344 + 30591961 = 3812^2 + 5531^2 .

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 45123305 - 2¹⁰ = 45122281 is a prime.

It is a super-2 number, since 2×45123305² = 4072225308246050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45123307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18560 + ... + 20849.

It is an arithmetic number, because the mean of its divisors is an integer number (6798225).

Almost surely, 2^45123305 is an apocalyptic number.

It is an amenable number.

45123305 is a deficient number, since it is larger than the sum of its proper divisors (9262495).

45123305 is a wasteful number, since it uses less digits than its factorization.

45123305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39643.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 45123305 is about 6717.3882573512. The cubic root of 45123305 is about 356.0139102632.

Adding to 45123305 its reverse (50332154), we get a palindrome (95455459).

The spelling of 45123305 in words is "forty-five million, one hundred twenty-three thousand, three hundred five".