45555521 has 8 divisors (see below), whose sum is σ = 52312800. Its totient is φ = 39234240.

The previous prime is 45555509. The next prime is 45555553. The reversal of 45555521 is 12555554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45555521 - 2⁶ = 45555457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45555581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108776 + ... + 109193.

It is an arithmetic number, because the mean of its divisors is an integer number (6539100).

Almost surely, 2^45555521 is an apocalyptic number.

It is an amenable number.

45555521 is a deficient number, since it is larger than the sum of its proper divisors (6757279).

45555521 is a wasteful number, since it uses less digits than its factorization.

45555521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217999.

The product of its digits is 25000, while the sum is 32.

The square root of 45555521 is about 6749.4830172392. The cubic root of 45555521 is about 357.1469995939.

The spelling of 45555521 in words is "forty-five million, five hundred fifty-five thousand, five hundred twenty-one".