20497001 has 8 divisors (see below), whose sum is σ = 24058560. Its totient is φ = 17093808.

The previous prime is 20496977. The next prime is 20497003. The reversal of 20497001 is 10079402.

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 20497001 - 2⁶ = 20496937 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 (20497003) 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, 39311 + ... + 39828.

It is an arithmetic number, because the mean of its divisors is an integer number (3007320).

Almost surely, 2^20497001 is an apocalyptic number.

It is an amenable number.

20497001 is a deficient number, since it is larger than the sum of its proper divisors (3561559).

20497001 is an equidigital number, since it uses as much as digits as its factorization.

20497001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79183.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20497001 is about 4527.3613728087. The cubic root of 20497001 is about 273.6718370425.

The spelling of 20497001 in words is "twenty million, four hundred ninety-seven thousand, one".