45545521 has 8 divisors (see below), whose sum is σ = 52107840. Its totient is φ = 38997168.

The previous prime is 45545519. The next prime is 45545531. The reversal of 45545521 is 12554554.

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

It is not a de Polignac number, because 45545521 - 2¹ = 45545519 is a prime.

It is a super-2 number, since 2×45545521² = 4148788966322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45545501) 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, 4830 + ... + 10696.

It is an arithmetic number, because the mean of its divisors is an integer number (6513480).

Almost surely, 2^45545521 is an apocalyptic number.

It is an amenable number.

45545521 is a deficient number, since it is larger than the sum of its proper divisors (6562319).

45545521 is a wasteful number, since it uses less digits than its factorization.

45545521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6983.

The product of its digits is 20000, while the sum is 31.

The square root of 45545521 is about 6748.7421791027. The cubic root of 45545521 is about 357.1208649544.

The spelling of 45545521 in words is "forty-five million, five hundred forty-five thousand, five hundred twenty-one".