45313521 has 8 divisors (see below), whose sum is σ = 65910624. Its totient is φ = 27462720.

The previous prime is 45313501. The next prime is 45313523. The reversal of 45313521 is 12531354.

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

It is not a de Polignac number, because 45313521 - 2⁷ = 45313393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45313491 and 45313500.

It is not an unprimeable number, because it can be changed into a prime (45313523) 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, 686536 + ... + 686601.

It is an arithmetic number, because the mean of its divisors is an integer number (8238828).

Almost surely, 2^45313521 is an apocalyptic number.

It is an amenable number.

45313521 is a deficient number, since it is larger than the sum of its proper divisors (20597103).

45313521 is a wasteful number, since it uses less digits than its factorization.

45313521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373151.

The product of its digits is 1800, while the sum is 24.

The square root of 45313521 is about 6731.5318464670. The cubic root of 45313521 is about 356.5134644483.

Adding to 45313521 its reverse (12531354), we get a palindrome (57844875).

The spelling of 45313521 in words is "forty-five million, three hundred thirteen thousand, five hundred twenty-one".