45431513 has 2 divisors, whose sum is σ = 45431514. Its totient is φ = 45431512.

The previous prime is 45431479. The next prime is 45431569. The reversal of 45431513 is 31513454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26491609 + 18939904 = 5147^2 + 4352^2 .

It is a cyclic number.

It is not a de Polignac number, because 45431513 - 2⁸ = 45431257 is a prime.

It is not a weakly prime, because it can be changed into another prime (45436513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22715756 + 22715757.

It is an arithmetic number, because the mean of its divisors is an integer number (22715757).

Almost surely, 2^45431513 is an apocalyptic number.

It is an amenable number.

45431513 is a deficient number, since it is larger than the sum of its proper divisors (1).

45431513 is an equidigital number, since it uses as much as digits as its factorization.

45431513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 26.

The square root of 45431513 is about 6740.2902756484. The cubic root of 45431513 is about 356.8226383755.

Adding to 45431513 its reverse (31513454), we get a palindrome (76944967).

It can be divided in two parts, 454315 and 13, that multiplied together give a palindrome (5906095).

The spelling of 45431513 in words is "forty-five million, four hundred thirty-one thousand, five hundred thirteen".