45247729 has 2 divisors, whose sum is σ = 45247730. Its totient is φ = 45247728.

The previous prime is 45247711. The next prime is 45247733. The reversal of 45247729 is 92774254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40297104 + 4950625 = 6348^2 + 2225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45247729 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45247691 and 45247700.

It is not a weakly prime, because it can be changed into another prime (45247789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22623864 + 22623865.

It is an arithmetic number, because the mean of its divisors is an integer number (22623865).

Almost surely, 2^45247729 is an apocalyptic number.

It is an amenable number.

45247729 is a deficient number, since it is larger than the sum of its proper divisors (1).

45247729 is an equidigital number, since it uses as much as digits as its factorization.

45247729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 45247729 is about 6726.6432193182. The cubic root of 45247729 is about 356.3408368344.

The spelling of 45247729 in words is "forty-five million, two hundred forty-seven thousand, seven hundred twenty-nine".