87343300521 has 81 divisors (see below), whose sum is σ = 135487088919. Its totient is φ = 54218402784.

The previous prime is 87343300507. The next prime is 87343300529. The reversal of 87343300521 is 12500334378.

The square root of 87343300521 is 295539.

It is a perfect power (a square), and thus also a powerful number.

87343300521 is a `hidden beast` number, since 8 + 7 + 343 + 300 + 5 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45800708121 + 41542592400 = 214011^2 + 203820^2 .

It is not a de Polignac number, because 87343300521 - 2⁵ = 87343300489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87343300529) 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 80 ways as a sum of consecutive naturals, for example, 1105611360 + ... + 1105611438.

Almost surely, 2^87343300521 is an apocalyptic number.

87343300521 is the 295539-th square number.

87343300521 is the 147770-th centered octagonal number.

It is an amenable number.

87343300521 is a deficient number, since it is larger than the sum of its proper divisors (48143788398).

87343300521 is an equidigital number, since it uses as much as digits as its factorization.

87343300521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Multiplying 87343300521 by its sum of digits (36), we get a square (3144358818756 = 1773234²).

Adding to 87343300521 its reverse (12500334378), we get a palindrome (99843634899).

The spelling of 87343300521 in words is "eighty-seven billion, three hundred forty-three million, three hundred thousand, five hundred twenty-one".