45653220 has 60 divisors (see below), whose sum is σ = 143220924. Its totient is φ = 12173760.

The previous prime is 45653191. The next prime is 45653249. The reversal of 45653220 is 2235654.

45653220 is a `hidden beast` number, since 4 + 5 + 653 + 2 + 2 + 0 = 666.

45653220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45653191) and next prime (45653249).

It can be written as a sum of positive squares in 2 ways, for example, as 30536676 + 15116544 = 5526^2 + 3888^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12471 + ... + 15710.

Almost surely, 2^45653220 is an apocalyptic number.

It is an amenable number.

45653220 is an abundant number, since it is smaller than the sum of its proper divisors (97567704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45653220 is a wasteful number, since it uses less digits than its factorization.

45653220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28202 (or 28191 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 45653220 is about 6756.7166582594. The cubic root of 45653220 is about 357.4021314249.

Adding to 45653220 its reverse (2235654), we get a palindrome (47888874).

The spelling of 45653220 in words is "forty-five million, six hundred fifty-three thousand, two hundred twenty".