2447551 has 2 divisors, whose sum is σ = 2447552. Its totient is φ = 2447550.

The previous prime is 2447539. The next prime is 2447567. The reversal of 2447551 is 1557442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2447551 - 2⁵ = 2447519 is a prime.

It is a Chen prime.

2447551 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2447521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223775 + 1223776.

It is an arithmetic number, because the mean of its divisors is an integer number (1223776).

2^2447551 is an apocalyptic number.

2447551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447551 is an equidigital number, since it uses as much as digits as its factorization.

2447551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 28.

The square root of 2447551 is about 1564.4650843020. The cubic root of 2447551 is about 134.7650416970.

The spelling of 2447551 in words is "two million, four hundred forty-seven thousand, five hundred fifty-one".