45122393 has 4 divisors (see below), whose sum is σ = 45266868. Its totient is φ = 44977920.

The previous prime is 45122383. The next prime is 45122401. The reversal of 45122393 is 39322154.

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 5721664 + 39400729 = 2392^2 + 6277^2 .

It is a cyclic number.

It is not a de Polignac number, because 45122393 - 2²⁰ = 44073817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45122353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71768 + ... + 72393.

It is an arithmetic number, because the mean of its divisors is an integer number (11316717).

Almost surely, 2^45122393 is an apocalyptic number.

It is an amenable number.

45122393 is a deficient number, since it is larger than the sum of its proper divisors (144475).

45122393 is a wasteful number, since it uses less digits than its factorization.

45122393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144474.

The product of its digits is 6480, while the sum is 29.

The square root of 45122393 is about 6717.3203734823. The cubic root of 45122393 is about 356.0115117474.

The spelling of 45122393 in words is "forty-five million, one hundred twenty-two thousand, three hundred ninety-three".