45432521 has 8 divisors (see below), whose sum is σ = 47853504. Its totient is φ = 43048720.

The previous prime is 45432509. The next prime is 45432523. The reversal of 45432521 is 12523454.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45432521 is a prime.

It is a super-3 number, since 3×45432521³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45432523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6770 + ... + 11691.

It is an arithmetic number, because the mean of its divisors is an integer number (5981688).

Almost surely, 2^45432521 is an apocalyptic number.

It is an amenable number.

45432521 is a deficient number, since it is larger than the sum of its proper divisors (2420983).

45432521 is a wasteful number, since it uses less digits than its factorization.

45432521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18591.

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

The square root of 45432521 is about 6740.3650494613. The cubic root of 45432521 is about 356.8252773262.

Adding to 45432521 its reverse (12523454), we get a palindrome (57955975).

The spelling of 45432521 in words is "forty-five million, four hundred thirty-two thousand, five hundred twenty-one".