7251731 has 2 divisors, whose sum is σ = 7251732. Its totient is φ = 7251730.

The previous prime is 7251721. The next prime is 7251733. The reversal of 7251731 is 1371527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7251731 - 2¹⁰ = 7250707 is a prime.

It is a super-2 number, since 2×7251731² = 105175204992722, which contains 22 as substring.

Together with 7251733, 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 7251731.

It is not a weakly prime, because it can be changed into another prime (7251733) 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, 3625865 + 3625866.

It is an arithmetic number, because the mean of its divisors is an integer number (3625866).

Almost surely, 2^7251731 is an apocalyptic number.

7251731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7251731 is an equidigital number, since it uses as much as digits as its factorization.

7251731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1470, while the sum is 26.

The square root of 7251731 is about 2692.9038230134. The cubic root of 7251731 is about 193.5592342251.

The spelling of 7251731 in words is "seven million, two hundred fifty-one thousand, seven hundred thirty-one".