45771647 has 4 divisors (see below), whose sum is σ = 45810120. Its totient is φ = 45733176.

The previous prime is 45771643. The next prime is 45771659. The reversal of 45771647 is 74617754.

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

It is a cyclic number.

It is not a de Polignac number, because 45771647 - 2² = 45771643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45771643) 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, 17393 + ... + 19850.

It is an arithmetic number, because the mean of its divisors is an integer number (11452530).

Almost surely, 2^45771647 is an apocalyptic number.

45771647 is a deficient number, since it is larger than the sum of its proper divisors (38473).

45771647 is a wasteful number, since it uses less digits than its factorization.

45771647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38472.

The product of its digits is 164640, while the sum is 41.

The square root of 45771647 is about 6765.4746322782. The cubic root of 45771647 is about 357.7109049436.

The spelling of 45771647 in words is "forty-five million, seven hundred seventy-one thousand, six hundred forty-seven".