20452601 has 16 divisors (see below), whose sum is σ = 22899408. Its totient is φ = 18144000.

The previous prime is 20452577. The next prime is 20452639. The reversal of 20452601 is 10625402.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 22201 + 20430400 = 149^2 + 4520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20452601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20451601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48371 + ... + 48791.

It is an arithmetic number, because the mean of its divisors is an integer number (1431213).

Almost surely, 2^20452601 is an apocalyptic number.

It is an amenable number.

20452601 is a deficient number, since it is larger than the sum of its proper divisors (2446807).

20452601 is a wasteful number, since it uses less digits than its factorization.

20452601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20452601 is about 4522.4551960191. The cubic root of 20452601 is about 273.4740875624.

The spelling of 20452601 in words is "twenty million, four hundred fifty-two thousand, six hundred one".