20540001 has 8 divisors (see below), whose sum is σ = 27428544. Its totient is φ = 13672400.

The previous prime is 20539997. The next prime is 20540017. The reversal of 20540001 is 10004502.

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 20540001 - 2² = 20539997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20540101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 6986.

It is an arithmetic number, because the mean of its divisors is an integer number (3428568).

Almost surely, 2^20540001 is an apocalyptic number.

It is an amenable number.

20540001 is a deficient number, since it is larger than the sum of its proper divisors (6888543).

20540001 is an equidigital number, since it uses as much as digits as its factorization.

20540001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 20540001 is about 4532.1077877738. The cubic root of 20540001 is about 273.8630791566.

Adding to 20540001 its reverse (10004502), we get a palindrome (30544503).

The spelling of 20540001 in words is "twenty million, five hundred forty thousand, one".