7255993 has 2 divisors, whose sum is σ = 7255994. Its totient is φ = 7255992.

The previous prime is 7255979. The next prime is 7255999. The reversal of 7255993 is 3995527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4443664 + 2812329 = 2108^2 + 1677^2 .

It is a cyclic number.

It is not a de Polignac number, because 7255993 - 2⁵ = 7255961 is a prime.

7255993 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7255999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3627996 + 3627997.

It is an arithmetic number, because the mean of its divisors is an integer number (3627997).

Almost surely, 2^7255993 is an apocalyptic number.

It is an amenable number.

7255993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7255993 is an equidigital number, since it uses as much as digits as its factorization.

7255993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 40.

The square root of 7255993 is about 2693.6950458432. The cubic root of 7255993 is about 193.5971464558.

It can be divided in two parts, 72 and 55993, that added together give a palindrome (56065).

The spelling of 7255993 in words is "seven million, two hundred fifty-five thousand, nine hundred ninety-three".