45181422 has 64 divisors (see below), whose sum is σ = 117976320. Its totient is φ = 12636000.

The previous prime is 45181421. The next prime is 45181457. The reversal of 45181422 is 22418154.

45181422 is a `hidden beast` number, since 4 + 518 + 142 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45181421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4797 + ... + 10647.

It is an arithmetic number, because the mean of its divisors is an integer number (1843380).

Almost surely, 2^45181422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45181422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58988160).

45181422 is an abundant number, since it is smaller than the sum of its proper divisors (72794898).

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

45181422 is a wasteful number, since it uses less digits than its factorization.

45181422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886 (or 5880 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 45181422 is about 6721.7127281668. The cubic root of 45181422 is about 356.1666885518.

Adding to 45181422 its reverse (22418154), we get a palindrome (67599576).

The spelling of 45181422 in words is "forty-five million, one hundred eighty-one thousand, four hundred twenty-two".