45581330 has 16 divisors (see below), whose sum is σ = 84876120. Its totient is φ = 17603712.

The previous prime is 45581329. The next prime is 45581383. The reversal of 45581330 is 3318554.

It can be written as a sum of positive squares in 4 ways, for example, as 45064369 + 516961 = 6713^2 + 719^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 45581293 and 45581302.

It is an unprimeable number.

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, 78299 + ... + 78878.

Almost surely, 2^45581330 is an apocalyptic number.

45581330 is a deficient number, since it is larger than the sum of its proper divisors (39294790).

45581330 is a wasteful number, since it uses less digits than its factorization.

45581330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157213.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 45581330 is about 6751.3946707329. The cubic root of 45581330 is about 357.2144328163.

Adding to 45581330 its reverse (3318554), we get a palindrome (48899884).

The spelling of 45581330 in words is "forty-five million, five hundred eighty-one thousand, three hundred thirty".