45548181 has 24 divisors (see below), whose sum is σ = 75504000. Its totient is φ = 25919136.

The previous prime is 45548077. The next prime is 45548197. The reversal of 45548181 is 18184554.

It is not a de Polignac number, because 45548181 - 2⁷ = 45548053 is a prime.

It is a super-2 number, since 2×45548181² = 4149273584817522, which contains 22 as substring.

45548181 is a modest number, since divided by 8181 gives 4554 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45548981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15195 + ... + 17943.

It is an arithmetic number, because the mean of its divisors is an integer number (3146000).

Almost surely, 2^45548181 is an apocalyptic number.

It is an amenable number.

45548181 is a deficient number, since it is larger than the sum of its proper divisors (29955819).

45548181 is a wasteful number, since it uses less digits than its factorization.

45548181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025 (or 3022 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 45548181 is about 6748.9392499859. The cubic root of 45548181 is about 357.1278171419.

The spelling of 45548181 in words is "forty-five million, five hundred forty-eight thousand, one hundred eighty-one".