45414521 has 4 divisors (see below), whose sum is σ = 45434100. Its totient is φ = 45394944.

The previous prime is 45414517. The next prime is 45414539. The reversal of 45414521 is 12541454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12541454 = 2 ⋅6270727.

It can be written as a sum of positive squares in 2 ways, for example, as 1590121 + 43824400 = 1261^2 + 6620^2 .

It is a cyclic number.

It is not a de Polignac number, because 45414521 - 2² = 45414517 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45414221) 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, 5756 + ... + 11133.

It is an arithmetic number, because the mean of its divisors is an integer number (11358525).

Almost surely, 2^45414521 is an apocalyptic number.

It is an amenable number.

45414521 is a deficient number, since it is larger than the sum of its proper divisors (19579).

45414521 is a wasteful number, since it uses less digits than its factorization.

45414521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19578.

The product of its digits is 3200, while the sum is 26.

The square root of 45414521 is about 6739.0296779284. The cubic root of 45414521 is about 356.7781473316.

Adding to 45414521 its reverse (12541454), we get a palindrome (57955975).

The spelling of 45414521 in words is "forty-five million, four hundred fourteen thousand, five hundred twenty-one".