20574253 has 16 divisors (see below), whose sum is σ = 24900480. Its totient is φ = 16623936.

The previous prime is 20574241. The next prime is 20574277. The reversal of 20574253 is 35247502.

It is a de Polignac number, because none of the positive numbers 2^k-20574253 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 (20574223) 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, 7551 + ... + 9907.

It is an arithmetic number, because the mean of its divisors is an integer number (1556280).

Almost surely, 2^20574253 is an apocalyptic number.

It is an amenable number.

20574253 is a deficient number, since it is larger than the sum of its proper divisors (4326227).

20574253 is a wasteful number, since it uses less digits than its factorization.

20574253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 20574253 is about 4535.8850294072. The cubic root of 20574253 is about 274.0152237266.

The spelling of 20574253 in words is "twenty million, five hundred seventy-four thousand, two hundred fifty-three".