94691521 has 2 divisors, whose sum is σ = 94691522. Its totient is φ = 94691520.

The previous prime is 94691503. The next prime is 94691543. The reversal of 94691521 is 12519649.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64320400 + 30371121 = 8020^2 + 5511^2 .

It is a cyclic number.

It is not a de Polignac number, because 94691521 - 2⁵ = 94691489 is a prime.

It is not a weakly prime, because it can be changed into another prime (94691501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47345760 + 47345761.

It is an arithmetic number, because the mean of its divisors is an integer number (47345761).

Almost surely, 2^94691521 is an apocalyptic number.

It is an amenable number.

94691521 is a deficient number, since it is larger than the sum of its proper divisors (1).

94691521 is an equidigital number, since it uses as much as digits as its factorization.

94691521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 94691521 is about 9730.9568388725. The cubic root of 94691521 is about 455.7958474284.

The spelling of 94691521 in words is "ninety-four million, six hundred ninety-one thousand, five hundred twenty-one".