45946521 has 20 divisors (see below), whose sum is σ = 69092452. Its totient is φ = 30427488.

The previous prime is 45946501. The next prime is 45946531. The reversal of 45946521 is 12564954.

45946521 is a `hidden beast` number, since 4 + 594 + 65 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3956121 + 41990400 = 1989^2 + 6480^2 .

It is not a de Polignac number, because 45946521 - 2⁶ = 45946457 is a prime.

It is a super-2 number, since 2×45946521² = 4222165584006882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45946501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10911 + ... + 14523.

Almost surely, 2^45946521 is an apocalyptic number.

It is an amenable number.

45946521 is a deficient number, since it is larger than the sum of its proper divisors (23145931).

45946521 is a wasteful number, since it uses less digits than its factorization.

45946521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782 (or 3773 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 45946521 is about 6778.3863123903. The cubic root of 45946521 is about 358.1658797664.

The spelling of 45946521 in words is "forty-five million, nine hundred forty-six thousand, five hundred twenty-one".