45645131 has 8 divisors (see below), whose sum is σ = 53276160. Its totient is φ = 38291688.

The previous prime is 45645121. The next prime is 45645139. The reversal of 45645131 is 13154654.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45645131 is a prime.

It is a super-2 number, since 2×45645131² = 4166955968014322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45645094 and 45645103.

It is not an unprimeable number, because it can be changed into a prime (45645139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69041 + ... + 69698.

It is an arithmetic number, because the mean of its divisors is an integer number (6659520).

Almost surely, 2^45645131 is an apocalyptic number.

45645131 is a deficient number, since it is larger than the sum of its proper divisors (7631029).

45645131 is a wasteful number, since it uses less digits than its factorization.

45645131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138793.

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

The square root of 45645131 is about 6756.1180421896. The cubic root of 45645131 is about 357.3810215842.

Adding to 45645131 its reverse (13154654), we get a palindrome (58799785).

The spelling of 45645131 in words is "forty-five million, six hundred forty-five thousand, one hundred thirty-one".