45123049 has 4 divisors (see below), whose sum is σ = 47777364. Its totient is φ = 42468736.

The previous prime is 45123041. The next prime is 45123053. The reversal of 45123049 is 94032154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25938649 + 19184400 = 5093^2 + 4380^2 .

It is a cyclic number.

It is not a de Polignac number, because 45123049 - 2³ = 45123041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45123041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1327132 + ... + 1327165.

It is an arithmetic number, because the mean of its divisors is an integer number (11944341).

Almost surely, 2^45123049 is an apocalyptic number.

It is an amenable number.

45123049 is a deficient number, since it is larger than the sum of its proper divisors (2654315).

45123049 is a wasteful number, since it uses less digits than its factorization.

45123049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654314.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 45123049 is about 6717.3692022994. The cubic root of 45123049 is about 356.0132369989.

The spelling of 45123049 in words is "forty-five million, one hundred twenty-three thousand, forty-nine".