45163521 has 32 divisors (see below), whose sum is σ = 72504320. Its totient is φ = 27620352.

The previous prime is 45163519. The next prime is 45163529. The reversal of 45163521 is 12536154.

45163521 is a `hidden beast` number, since 4 + 5 + 1 + 635 + 21 = 666.

It is not a de Polignac number, because 45163521 - 2¹ = 45163519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45163529) 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, 77985 + ... + 78561.

It is an arithmetic number, because the mean of its divisors is an integer number (2265760).

Almost surely, 2^45163521 is an apocalyptic number.

It is an amenable number.

45163521 is a deficient number, since it is larger than the sum of its proper divisors (27340799).

45163521 is a wasteful number, since it uses less digits than its factorization.

45163521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 816 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 45163521 is about 6720.3810159841. The cubic root of 45163521 is about 356.1196442740.

Adding to 45163521 its reverse (12536154), we get a palindrome (57699675).

The spelling of 45163521 in words is "forty-five million, one hundred sixty-three thousand, five hundred twenty-one".