20597901 has 4 divisors (see below), whose sum is σ = 27463872. Its totient is φ = 13731932.

The previous prime is 20597887. The next prime is 20597933. The reversal of 20597901 is 10979502.

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.

It is a cyclic number.

It is not a de Polignac number, because 20597901 - 2⁵ = 20597869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20597971) 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, 3432981 + ... + 3432986.

It is an arithmetic number, because the mean of its divisors is an integer number (6865968).

Almost surely, 2^20597901 is an apocalyptic number.

It is an amenable number.

20597901 is a deficient number, since it is larger than the sum of its proper divisors (6865971).

20597901 is an equidigital number, since it uses as much as digits as its factorization.

20597901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865970.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 20597901 is about 4538.4910487958. The cubic root of 20597901 is about 274.1201676895.

The spelling of 20597901 in words is "twenty million, five hundred ninety-seven thousand, nine hundred one".