45247457 has 2 divisors, whose sum is σ = 45247458. Its totient is φ = 45247456.

The previous prime is 45247429. The next prime is 45247459. The reversal of 45247457 is 75474254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25391521 + 19855936 = 5039^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 45247457 - 2⁶ = 45247393 is a prime.

Together with 45247459, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45247457.

It is not a weakly prime, because it can be changed into another prime (45247459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22623728 + 22623729.

It is an arithmetic number, because the mean of its divisors is an integer number (22623729).

Almost surely, 2^45247457 is an apocalyptic number.

It is an amenable number.

45247457 is a deficient number, since it is larger than the sum of its proper divisors (1).

45247457 is an equidigital number, since it uses as much as digits as its factorization.

45247457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 38.

The square root of 45247457 is about 6726.6230011797. The cubic root of 45247457 is about 356.3401228029.

The spelling of 45247457 in words is "forty-five million, two hundred forty-seven thousand, four hundred fifty-seven".