20272601 has 4 divisors (see below), whose sum is σ = 21339600. Its totient is φ = 19205604.

The previous prime is 20272597. The next prime is 20272607. The reversal of 20272601 is 10627202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10627202 = 2 ⋅5313601.

It is a cyclic number.

It is not a de Polignac number, because 20272601 - 2² = 20272597 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 (20272607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533471 + ... + 533508.

It is an arithmetic number, because the mean of its divisors is an integer number (5334900).

Almost surely, 2^20272601 is an apocalyptic number.

It is an amenable number.

20272601 is a deficient number, since it is larger than the sum of its proper divisors (1066999).

20272601 is a wasteful number, since it uses less digits than its factorization.

20272601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066998.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20272601 is about 4502.5105219200. The cubic root of 20272601 is about 272.6694555250.

Adding to 20272601 its reverse (10627202), we get a palindrome (30899803).

The spelling of 20272601 in words is "twenty million, two hundred seventy-two thousand, six hundred one".