20254971 has 16 divisors (see below), whose sum is σ = 29904768. Its totient is φ = 12091200.

The previous prime is 20254967. The next prime is 20254981. The reversal of 20254971 is 17945202.

20254971 = 949² + 950² + ... + 970².

It is not a de Polignac number, because 20254971 - 2² = 20254967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20254901) 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 15 ways as a sum of consecutive naturals, for example, 2370 + ... + 6791.

It is an arithmetic number, because the mean of its divisors is an integer number (1869048).

Almost surely, 2^20254971 is an apocalyptic number.

20254971 is a deficient number, since it is larger than the sum of its proper divisors (9649797).

20254971 is a wasteful number, since it uses less digits than its factorization.

20254971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9242.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 20254971 is about 4500.5522994406. The cubic root of 20254971 is about 272.5903905728.

It can be divided in two parts, 2025 and 4971, that added together give a palindrome (6996).

The spelling of 20254971 in words is "twenty million, two hundred fifty-four thousand, nine hundred seventy-one".