20361601 has 8 divisors (see below), whose sum is σ = 22881600. Its totient is φ = 17977872.

The previous prime is 20361599. The next prime is 20361619. The reversal of 20361601 is 10616302.

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 20361601 - 2¹ = 20361599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20361641) 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 in 7 ways as a sum of consecutive naturals, for example, 33751 + ... + 34348.

It is an arithmetic number, because the mean of its divisors is an integer number (2860200).

Almost surely, 2^20361601 is an apocalyptic number.

It is an amenable number.

20361601 is a deficient number, since it is larger than the sum of its proper divisors (2519999).

20361601 is a wasteful number, since it uses less digits than its factorization.

20361601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68135.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20361601 is about 4512.3830732774. The cubic root of 20361601 is about 273.0678940387.

Adding to 20361601 its reverse (10616302), we get a palindrome (30977903).

The spelling of 20361601 in words is "twenty million, three hundred sixty-one thousand, six hundred one".