47450549 has 2 divisors, whose sum is σ = 47450550. Its totient is φ = 47450548.

The previous prime is 47450509. The next prime is 47450551. The reversal of 47450549 is 94505474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41049649 + 6400900 = 6407^2 + 2530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47450549 is a prime.

It is a Sophie Germain prime.

Together with 47450551, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47450509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23725274 + 23725275.

It is an arithmetic number, because the mean of its divisors is an integer number (23725275).

Almost surely, 2^47450549 is an apocalyptic number.

It is an amenable number.

47450549 is a deficient number, since it is larger than the sum of its proper divisors (1).

47450549 is an equidigital number, since it uses as much as digits as its factorization.

47450549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 47450549 is about 6888.4358892277. The cubic root of 47450549 is about 362.0321008742.

The spelling of 47450549 in words is "forty-seven million, four hundred fifty thousand, five hundred forty-nine".