521490147 has 16 divisors (see below), whose sum is σ = 736688160. Its totient is φ = 327002112.

The previous prime is 521490121. The next prime is 521490157. The reversal of 521490147 is 741094125.

It is a happy number.

It is not a de Polignac number, because 521490147 - 2⁶ = 521490083 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (521490157) 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 in 15 ways as a sum of consecutive naturals, for example, 136479 + ... + 140247.

It is an arithmetic number, because the mean of its divisors is an integer number (46043010).

Almost surely, 2^521490147 is an apocalyptic number.

521490147 is a deficient number, since it is larger than the sum of its proper divisors (215198013).

521490147 is a wasteful number, since it uses less digits than its factorization.

521490147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6502.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 521490147 is about 22836.1587619284. The cubic root of 521490147 is about 804.9125566322.

The spelling of 521490147 in words is "five hundred twenty-one million, four hundred ninety thousand, one hundred forty-seven".