20245173 has 8 divisors (see below), whose sum is σ = 29070048. Its totient is φ = 12458544.

The previous prime is 20245171. The next prime is 20245177. The reversal of 20245173 is 37154202.

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

It is not a de Polignac number, because 20245173 - 2¹ = 20245171 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259515 + ... + 259592.

It is an arithmetic number, because the mean of its divisors is an integer number (3633756).

Almost surely, 2^20245173 is an apocalyptic number.

It is an amenable number.

20245173 is a deficient number, since it is larger than the sum of its proper divisors (8824875).

20245173 is a wasteful number, since it uses less digits than its factorization.

20245173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519123.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20245173 is about 4499.4636347014. The cubic root of 20245173 is about 272.5464298183.

Adding to 20245173 its reverse (37154202), we get a palindrome (57399375).

The spelling of 20245173 in words is "twenty million, two hundred forty-five thousand, one hundred seventy-three".