7200140557 has 2 divisors, whose sum is σ = 7200140558. Its totient is φ = 7200140556.

The previous prime is 7200140489. The next prime is 7200140609. The reversal of 7200140557 is 7550410027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3673087236 + 3527053321 = 60606^2 + 59389^2 .

It is an emirp because it is prime and its reverse (7550410027) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7200140557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7200140657) 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, 3600070278 + 3600070279.

It is an arithmetic number, because the mean of its divisors is an integer number (3600070279).

Almost surely, 2^7200140557 is an apocalyptic number.

It is an amenable number.

7200140557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7200140557 is an equidigital number, since it uses as much as digits as its factorization.

7200140557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 7200140557 is about 84853.6419784089. The cubic root of 7200140557 is about 1930.9913345268.

The spelling of 7200140557 in words is "seven billion, two hundred million, one hundred forty thousand, five hundred fifty-seven".