45131329 has 4 divisors (see below), whose sum is σ = 45214384. Its totient is φ = 45048276.

The previous prime is 45131323. The next prime is 45131351. The reversal of 45131329 is 92313154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45131329 - 2¹¹ = 45129281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45131297 and 45131306.

It is not an unprimeable number, because it can be changed into a prime (45131323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40707 + ... + 41800.

It is an arithmetic number, because the mean of its divisors is an integer number (11303596).

Almost surely, 2^45131329 is an apocalyptic number.

It is an amenable number.

45131329 is a deficient number, since it is larger than the sum of its proper divisors (83055).

45131329 is an equidigital number, since it uses as much as digits as its factorization.

45131329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83054.

The product of its digits is 3240, while the sum is 28.

The square root of 45131329 is about 6717.9854867363. The cubic root of 45131329 is about 356.0350116010.

The spelling of 45131329 in words is "forty-five million, one hundred thirty-one thousand, three hundred twenty-nine".