45538665 has 32 divisors (see below), whose sum is σ = 77915520. Its totient is φ = 22631424.

The previous prime is 45538657. The next prime is 45538667. The reversal of 45538665 is 56683554.

It is a happy number.

It is not a de Polignac number, because 45538665 - 2³ = 45538657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45538667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26451 + ... + 28119.

It is an arithmetic number, because the mean of its divisors is an integer number (2434860).

Almost surely, 2^45538665 is an apocalyptic number.

It is an amenable number.

45538665 is a deficient number, since it is larger than the sum of its proper divisors (32376855).

45538665 is a wasteful number, since it uses less digits than its factorization.

45538665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801.

The product of its digits is 432000, while the sum is 42.

The square root of 45538665 is about 6748.2342134813. The cubic root of 45538665 is about 357.1029448350.

The spelling of 45538665 in words is "forty-five million, five hundred thirty-eight thousand, six hundred sixty-five".