2447251 has 2 divisors, whose sum is σ = 2447252. Its totient is φ = 2447250.

The previous prime is 2447239. The next prime is 2447267. The reversal of 2447251 is 1527442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2447251 - 2¹¹ = 2445203 is a prime.

It is an Ulam number.

2447251 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2447351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223625 + 1223626.

It is an arithmetic number, because the mean of its divisors is an integer number (1223626).

2^2447251 is an apocalyptic number.

2447251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447251 is an equidigital number, since it uses as much as digits as its factorization.

2447251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 25.

The square root of 2447251 is about 1564.3692019469. The cubic root of 2447251 is about 134.7595353542.

The spelling of 2447251 in words is "two million, four hundred forty-seven thousand, two hundred fifty-one".