7997000153 has 2 divisors, whose sum is σ = 7997000154. Its totient is φ = 7997000152.

The previous prime is 7997000129. The next prime is 7997000159. The reversal of 7997000153 is 3510007997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5922379849 + 2074620304 = 76957^2 + 45548^2 .

It is a cyclic number.

It is not a de Polignac number, because 7997000153 - 2³² = 3702032857 is a prime.

It is a super-2 number, since 2×7997000153² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7997000153.

It is not a weakly prime, because it can be changed into another prime (7997000159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3998500076 + 3998500077.

It is an arithmetic number, because the mean of its divisors is an integer number (3998500077).

Almost surely, 2^7997000153 is an apocalyptic number.

It is an amenable number.

7997000153 is a deficient number, since it is larger than the sum of its proper divisors (1).

7997000153 is an equidigital number, since it uses as much as digits as its factorization.

7997000153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 7997000153 is about 89425.9478730866. The cubic root of 7997000153 is about 1999.7499814967.

The spelling of 7997000153 in words is "seven billion, nine hundred ninety-seven million, one hundred fifty-three", and thus it is an aban number.