45131004 has 36 divisors (see below), whose sum is σ = 120087240. Its totient is φ = 14251680.

The previous prime is 45131003. The next prime is 45131017. The reversal of 45131004 is 40013154.

It is a happy number.

45131004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32307 + ... + 33674.

Almost surely, 2^45131004 is an apocalyptic number.

It is an amenable number.

45131004 is an abundant number, since it is smaller than the sum of its proper divisors (74956236).

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

45131004 is a wasteful number, since it uses less digits than its factorization.

45131004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66010 (or 66005 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 45131004 is about 6717.9612978939. The cubic root of 45131004 is about 356.0341569718.

Adding to 45131004 its reverse (40013154), we get a palindrome (85144158).

The spelling of 45131004 in words is "forty-five million, one hundred thirty-one thousand, four".