7140251 has 2 divisors, whose sum is σ = 7140252. Its totient is φ = 7140250.

The previous prime is 7140247. The next prime is 7140253. The reversal of 7140251 is 1520417.

It is a strong prime.

It is an emirp because it is prime and its reverse (1520417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7140251 - 2² = 7140247 is a prime.

It is a Sophie Germain prime.

Together with 7140253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7140253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570125 + 3570126.

It is an arithmetic number, because the mean of its divisors is an integer number (3570126).

Almost surely, 2^7140251 is an apocalyptic number.

7140251 is a deficient number, since it is larger than the sum of its proper divisors (1).

7140251 is an equidigital number, since it uses as much as digits as its factorization.

7140251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 7140251 is about 2672.1248099593. The cubic root of 7140251 is about 192.5622534360.

Adding to 7140251 its reverse (1520417), we get a palindrome (8660668).

The spelling of 7140251 in words is "seven million, one hundred forty thousand, two hundred fifty-one".