7505343997 has 2 divisors, whose sum is σ = 7505343998. Its totient is φ = 7505343996.

The previous prime is 7505343977. The next prime is 7505344013. The reversal of 7505343997 is 7993435057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5152511961 + 2352832036 = 71781^2 + 48506^2 .

It is an emirp because it is prime and its reverse (7993435057) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7505343997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7505343917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3752671998 + 3752671999.

It is an arithmetic number, because the mean of its divisors is an integer number (3752671999).

Almost surely, 2^7505343997 is an apocalyptic number.

It is an amenable number.

7505343997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7505343997 is an equidigital number, since it uses as much as digits as its factorization.

7505343997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3572100, while the sum is 52.

The square root of 7505343997 is about 86633.3884654179. The cubic root of 7505343997 is about 1957.8986222271.

The spelling of 7505343997 in words is "seven billion, five hundred five million, three hundred forty-three thousand, nine hundred ninety-seven".