7520161501 has 2 divisors, whose sum is σ = 7520161502. Its totient is φ = 7520161500.

The previous prime is 7520161499. The next prime is 7520161507. The reversal of 7520161501 is 1051610257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6411204900 + 1108956601 = 80070^2 + 33301^2 .

It is a cyclic number.

It is not a de Polignac number, because 7520161501 - 2¹ = 7520161499 is a prime.

It is a super-2 number, since 2×7520161501² (a number of 21 digits) contains 22 as substring.

Together with 7520161499, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7520161501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7520161507) 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, 3760080750 + 3760080751.

It is an arithmetic number, because the mean of its divisors is an integer number (3760080751).

Almost surely, 2^7520161501 is an apocalyptic number.

It is an amenable number.

7520161501 is a deficient number, since it is larger than the sum of its proper divisors (1).

7520161501 is an equidigital number, since it uses as much as digits as its factorization.

7520161501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 7520161501 is about 86718.8647354196. The cubic root of 7520161501 is about 1959.1862425201.

Adding to 7520161501 its reverse (1051610257), we get a palindrome (8571771758).

The spelling of 7520161501 in words is "seven billion, five hundred twenty million, one hundred sixty-one thousand, five hundred one".