45644651 has 4 divisors (see below), whose sum is σ = 49155792. Its totient is φ = 42133512.

The previous prime is 45644633. The next prime is 45644657. The reversal of 45644651 is 15644654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15644654 = 2 ⋅7822327.

It is a cyclic number.

It is not a de Polignac number, because 45644651 - 2⁶ = 45644587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45644657) 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, 1755551 + ... + 1755576.

It is an arithmetic number, because the mean of its divisors is an integer number (12288948).

Almost surely, 2^45644651 is an apocalyptic number.

45644651 is a deficient number, since it is larger than the sum of its proper divisors (3511141).

45644651 is a wasteful number, since it uses less digits than its factorization.

45644651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511140.

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

The square root of 45644651 is about 6756.0825187382. The cubic root of 45644651 is about 357.3797688511.

The spelling of 45644651 in words is "forty-five million, six hundred forty-four thousand, six hundred fifty-one".