20953097 has 4 divisors (see below), whose sum is σ = 22857936. Its totient is φ = 19048260.

The previous prime is 20953087. The next prime is 20953123. The reversal of 20953097 is 79035902.

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 not a de Polignac number, because 20953097 - 2⁴ = 20953081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20953007) 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 3 ways as a sum of consecutive naturals, for example, 952403 + ... + 952424.

It is an arithmetic number, because the mean of its divisors is an integer number (5714484).

Almost surely, 2^20953097 is an apocalyptic number.

It is an amenable number.

20953097 is a deficient number, since it is larger than the sum of its proper divisors (1904839).

20953097 is a wasteful number, since it uses less digits than its factorization.

20953097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904838.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 20953097 is about 4577.4552974333. The cubic root of 20953097 is about 275.6868648143.

Adding to 20953097 its reverse (79035902), we get a palindrome (99988999).

The spelling of 20953097 in words is "twenty million, nine hundred fifty-three thousand, ninety-seven".