45305647 has 4 divisors (see below), whose sum is σ = 45594376. Its totient is φ = 45016920.

The previous prime is 45305621. The next prime is 45305651. The reversal of 45305647 is 74650354.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45305647 is a prime.

It is a super-3 number, since 3×45305647³ (a number of 24 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 (45305677) 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, 144129 + ... + 144442.

It is an arithmetic number, because the mean of its divisors is an integer number (11398594).

Almost surely, 2^45305647 is an apocalyptic number.

45305647 is a deficient number, since it is larger than the sum of its proper divisors (288729).

45305647 is a wasteful number, since it uses less digits than its factorization.

45305647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288728.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 45305647 is about 6730.9469616095. The cubic root of 45305647 is about 356.4928131463.

The spelling of 45305647 in words is "forty-five million, three hundred five thousand, six hundred forty-seven".