45645641 has 4 divisors (see below), whose sum is σ = 45835284. Its totient is φ = 45456000.

The previous prime is 45645631. The next prime is 45645643. The reversal of 45645641 is 14654654.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17598025 + 28047616 = 4195^2 + 5296^2 .

It is a cyclic number.

It is not a de Polignac number, because 45645641 - 2⁶ = 45645577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45645643) 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, 94460 + ... + 94941.

It is an arithmetic number, because the mean of its divisors is an integer number (11458821).

Almost surely, 2^45645641 is an apocalyptic number.

It is an amenable number.

45645641 is a deficient number, since it is larger than the sum of its proper divisors (189643).

45645641 is a wasteful number, since it uses less digits than its factorization.

45645641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189642.

The product of its digits is 57600, while the sum is 35.

The square root of 45645641 is about 6756.1557856521. The cubic root of 45645641 is about 357.3823526034.

The spelling of 45645641 in words is "forty-five million, six hundred forty-five thousand, six hundred forty-one".