7521287161 has 8 divisors (see below), whose sum is σ = 7929704000. Its totient is φ = 7114126320.

The previous prime is 7521287149. The next prime is 7521287167. The reversal of 7521287161 is 1617821257.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7521287161 - 2¹¹ = 7521285113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7521287167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301686 + ... + 325663.

It is an arithmetic number, because the mean of its divisors is an integer number (991213000).

Almost surely, 2^7521287161 is an apocalyptic number.

It is an amenable number.

7521287161 is a deficient number, since it is larger than the sum of its proper divisors (408416839).

7521287161 is a wasteful number, since it uses less digits than its factorization.

7521287161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627999.

The product of its digits is 47040, while the sum is 40.

The square root of 7521287161 is about 86725.3547758670. The cubic root of 7521287161 is about 1959.2839916423.

The spelling of 7521287161 in words is "seven billion, five hundred twenty-one million, two hundred eighty-seven thousand, one hundred sixty-one".