20471601 has 8 divisors (see below), whose sum is σ = 27326560. Its totient is φ = 13632192.

The previous prime is 20471599. The next prime is 20471603. The reversal of 20471601 is 10617402.

It is an interprime number because it is at equal distance from previous prime (20471599) and next prime (20471603).

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

It is not a de Polignac number, because 20471601 - 2¹ = 20471599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20471603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (3415820).

Almost surely, 2^20471601 is an apocalyptic number.

It is an amenable number.

20471601 is a deficient number, since it is larger than the sum of its proper divisors (6854959).

20471601 is a wasteful number, since it uses less digits than its factorization.

20471601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20471601 is about 4524.5553372680. Note that the first 3 decimals coincide. The cubic root of 20471601 is about 273.5587450835.

The spelling of 20471601 in words is "twenty million, four hundred seventy-one thousand, six hundred one".