45766521 has 12 divisors (see below), whose sum is σ = 67894372. Its totient is φ = 29686176.

The previous prime is 45766493. The next prime is 45766543. The reversal of 45766521 is 12566754.

It is a happy number.

45766521 is a `hidden beast` number, since 4 + 576 + 65 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41100921 + 4665600 = 6411^2 + 2160^2 .

It is not a de Polignac number, because 45766521 - 2¹¹ = 45764473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45766621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68386 + ... + 69051.

Almost surely, 2^45766521 is an apocalyptic number.

It is an amenable number.

45766521 is a deficient number, since it is larger than the sum of its proper divisors (22127851).

45766521 is a wasteful number, since it uses less digits than its factorization.

45766521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137480 (or 137477 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 45766521 is about 6765.0957864616. The cubic root of 45766521 is about 357.6975510104.

The spelling of 45766521 in words is "forty-five million, seven hundred sixty-six thousand, five hundred twenty-one".