45521532013 has 4 divisors (see below), whose sum is σ = 45521964640. Its totient is φ = 45521099388.

The previous prime is 45521532011. The next prime is 45521532031. The reversal of 45521532013 is 31023512554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31023512554 = 2 ⋅15511756277.

It is a cyclic number.

It is not a de Polignac number, because 45521532013 - 2¹ = 45521532011 is a prime.

It is a super-3 number, since 3×45521532013³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45521532011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54706 + ... + 306652.

It is an arithmetic number, because the mean of its divisors is an integer number (11380491160).

Almost surely, 2^45521532013 is an apocalyptic number.

It is an amenable number.

45521532013 is a deficient number, since it is larger than the sum of its proper divisors (432627).

45521532013 is a wasteful number, since it uses less digits than its factorization.

45521532013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432626.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 45521532013 in words is "forty-five billion, five hundred twenty-one million, five hundred thirty-two thousand, thirteen".