45524020221 has 36 divisors (see below), whose sum is σ = 71286354048. Its totient is φ = 29029728024.

The previous prime is 45524020207. The next prime is 45524020249. The reversal of 45524020221 is 12202042554.

45524020221 is a `hidden beast` number, since 455 + 2 + 4 + 0 + 202 + 2 + 1 = 666.

It is not a de Polignac number, because 45524020221 - 2⁵ = 45524020189 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45524020921) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48525 + ... + 305618.

Almost surely, 2^45524020221 is an apocalyptic number.

It is an amenable number.

45524020221 is a deficient number, since it is larger than the sum of its proper divisors (25762333827).

45524020221 is an equidigital number, since it uses as much as digits as its factorization.

45524020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354204 (or 354169 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 45524020221 its reverse (12202042554), we get a palindrome (57726062775).

The spelling of 45524020221 in words is "forty-five billion, five hundred twenty-four million, twenty thousand, two hundred twenty-one".