20097455 has 16 divisors (see below), whose sum is σ = 28452864. Its totient is φ = 13335840.

The previous prime is 20097443. The next prime is 20097457. The reversal of 20097455 is 55479002.

It is not a de Polignac number, because 20097455 - 2⁴ = 20097439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20097457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8177 + ... + 10346.

It is an arithmetic number, because the mean of its divisors is an integer number (1778304).

Almost surely, 2^20097455 is an apocalyptic number.

20097455 is a deficient number, since it is larger than the sum of its proper divisors (8355409).

20097455 is a wasteful number, since it uses less digits than its factorization.

20097455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18566.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 20097455 is about 4483.0185143495. The cubic root of 20097455 is about 271.8819367588.

The spelling of 20097455 in words is "twenty million, ninety-seven thousand, four hundred fifty-five".