45122543 has 4 divisors (see below), whose sum is σ = 45148320. Its totient is φ = 45096768.

The previous prime is 45122537. The next prime is 45122563. The reversal of 45122543 is 34522154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34522154 = 2 ⋅17261077.

It is a cyclic number.

It is not a de Polignac number, because 45122543 - 2¹⁶ = 45057007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45122503) 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, 10055 + ... + 13832.

It is an arithmetic number, because the mean of its divisors is an integer number (11287080).

Almost surely, 2^45122543 is an apocalyptic number.

45122543 is a deficient number, since it is larger than the sum of its proper divisors (25777).

45122543 is a wasteful number, since it uses less digits than its factorization.

45122543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25776.

The product of its digits is 4800, while the sum is 26.

The square root of 45122543 is about 6717.3315386394. The cubic root of 45122543 is about 356.0119062424.

Adding to 45122543 its reverse (34522154), we get a palindrome (79644697).

The spelling of 45122543 in words is "forty-five million, one hundred twenty-two thousand, five hundred forty-three".