1601104521 has 8 divisors (see below), whose sum is σ = 2247164320. Its totient is φ = 1011223872.

The previous prime is 1601104517. The next prime is 1601104537. The reversal of 1601104521 is 1254011061.

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

It is not a de Polignac number, because 1601104521 - 2² = 1601104517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601104541) 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, 14044720 + ... + 14044833.

It is an arithmetic number, because the mean of its divisors is an integer number (280895540).

Almost surely, 2^1601104521 is an apocalyptic number.

It is an amenable number.

1601104521 is a deficient number, since it is larger than the sum of its proper divisors (646059799).

1601104521 is a wasteful number, since it uses less digits than its factorization.

1601104521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28089575.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1601104521 is about 40013.8041305747. The cubic root of 1601104521 is about 1169.8761699613.

Adding to 1601104521 its reverse (1254011061), we get a palindrome (2855115582).

The spelling of 1601104521 in words is "one billion, six hundred one million, one hundred four thousand, five hundred twenty-one".