45581442 has 16 divisors (see below), whose sum is σ = 92262240. Its totient is φ = 15010592.

The previous prime is 45581441. The next prime is 45581449. The reversal of 45581442 is 24418554.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (45581441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45267 + ... + 46262.

It is an arithmetic number, because the mean of its divisors is an integer number (5766390).

Almost surely, 2^45581442 is an apocalyptic number.

45581442 is an abundant number, since it is smaller than the sum of its proper divisors (46680798).

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

45581442 is a wasteful number, since it uses less digits than its factorization.

45581442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91617.

The product of its digits is 25600, while the sum is 33.

The square root of 45581442 is about 6751.4029653102. The cubic root of 45581442 is about 357.2147253921.

Adding to 45581442 its reverse (24418554), we get a palindrome (69999996).

The spelling of 45581442 in words is "forty-five million, five hundred eighty-one thousand, four hundred forty-two".