45666553 has 4 divisors (see below), whose sum is σ = 45699940. Its totient is φ = 45633168.

The previous prime is 45666541. The next prime is 45666571. The reversal of 45666553 is 35566654.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18292729 + 27373824 = 4277^2 + 5232^2 .

It is a cyclic number.

It is not a de Polignac number, because 45666553 - 2⁹ = 45666041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45666583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14550 + ... + 17407.

It is an arithmetic number, because the mean of its divisors is an integer number (11424985).

Almost surely, 2^45666553 is an apocalyptic number.

It is an amenable number.

45666553 is a deficient number, since it is larger than the sum of its proper divisors (33387).

45666553 is a wasteful number, since it uses less digits than its factorization.

45666553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33386.

The product of its digits is 324000, while the sum is 40.

The square root of 45666553 is about 6757.7032340877. The cubic root of 45666553 is about 357.4369210760.

The spelling of 45666553 in words is "forty-five million, six hundred sixty-six thousand, five hundred fifty-three".