20597055 has 8 divisors (see below), whose sum is σ = 32955312. Its totient is φ = 10985088.

The previous prime is 20597041. The next prime is 20597069. The reversal of 20597055 is 55079502.

It is an interprime number because it is at equal distance from previous prime (20597041) and next prime (20597069).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20597055 - 2⁴ = 20597039 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686554 + ... + 686583.

It is an arithmetic number, because the mean of its divisors is an integer number (4119414).

Almost surely, 2^20597055 is an apocalyptic number.

20597055 is a deficient number, since it is larger than the sum of its proper divisors (12358257).

20597055 is a wasteful number, since it uses less digits than its factorization.

20597055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373145.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 20597055 is about 4538.3978450550. The cubic root of 20597055 is about 274.1164147369.

The spelling of 20597055 in words is "twenty million, five hundred ninety-seven thousand, fifty-five".