45643513 has 4 divisors (see below), whose sum is σ = 45666640. Its totient is φ = 45620388.

The previous prime is 45643489. The next prime is 45643517. The reversal of 45643513 is 31534654.

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.

It is a cyclic number.

It is not a de Polignac number, because 45643513 - 2⁹ = 45643001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45643517) 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, 8295 + ... + 12652.

It is an arithmetic number, because the mean of its divisors is an integer number (11416660).

Almost surely, 2^45643513 is an apocalyptic number.

It is an amenable number.

45643513 is a deficient number, since it is larger than the sum of its proper divisors (23127).

45643513 is a wasteful number, since it uses less digits than its factorization.

45643513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23126.

The product of its digits is 21600, while the sum is 31.

The square root of 45643513 is about 6755.9982978091. The cubic root of 45643513 is about 357.3767987948.

The spelling of 45643513 in words is "forty-five million, six hundred forty-three thousand, five hundred thirteen".