7256737 has 2 divisors, whose sum is σ = 7256738. Its totient is φ = 7256736.

The previous prime is 7256719. The next prime is 7256741. The reversal of 7256737 is 7376527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4835601 + 2421136 = 2199^2 + 1556^2 .

It is a cyclic number.

It is not a de Polignac number, because 7256737 - 2⁷ = 7256609 is a prime.

It is a d-powerful number, because it can be written as 7⁷ + 2³ + 5⁵ + 6 + 7⁷ + 3¹⁴ + 7⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 7256696 and 7256705.

It is not a weakly prime, because it can be changed into another prime (7259737) 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, 3628368 + 3628369.

It is an arithmetic number, because the mean of its divisors is an integer number (3628369).

Almost surely, 2^7256737 is an apocalyptic number.

It is an amenable number.

7256737 is a deficient number, since it is larger than the sum of its proper divisors (1).

7256737 is an equidigital number, since it uses as much as digits as its factorization.

7256737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 37.

The square root of 7256737 is about 2693.8331425684. The cubic root of 7256737 is about 193.6037631176.

The spelling of 7256737 in words is "seven million, two hundred fifty-six thousand, seven hundred thirty-seven".