45425521 has 4 divisors (see below), whose sum is σ = 45602532. Its totient is φ = 45248512.

The previous prime is 45425519. The next prime is 45425533. The reversal of 45425521 is 12552454.

45425521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12552454 = 2 ⋅6276227.

It can be written as a sum of positive squares in 2 ways, for example, as 24850225 + 20575296 = 4985^2 + 4536^2 .

It is a cyclic number.

It is not a de Polignac number, because 45425521 - 2¹ = 45425519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45425521.

It is not an unprimeable number, because it can be changed into a prime (45425551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88120 + ... + 88633.

It is an arithmetic number, because the mean of its divisors is an integer number (11400633).

Almost surely, 2^45425521 is an apocalyptic number.

It is an amenable number.

45425521 is a deficient number, since it is larger than the sum of its proper divisors (177011).

45425521 is a wasteful number, since it uses less digits than its factorization.

45425521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177010.

The product of its digits is 8000, while the sum is 28.

The square root of 45425521 is about 6739.8457697487. The cubic root of 45425521 is about 356.8069504744.

Adding to 45425521 its reverse (12552454), we get a palindrome (57977975).

It can be divided in two parts, 454255 and 21, that added together give a square (454276 = 674²).

The spelling of 45425521 in words is "forty-five million, four hundred twenty-five thousand, five hundred twenty-one".