20574313 has 2 divisors, whose sum is σ = 20574314. Its totient is φ = 20574312.

The previous prime is 20574287. The next prime is 20574319. The reversal of 20574313 is 31347502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 3829849 = 4092^2 + 1957^2 .

It is a cyclic number.

It is not a de Polignac number, because 20574313 - 2¹³ = 20566121 is a prime.

It is not a weakly prime, because it can be changed into another prime (20574319) 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 as a sum of consecutive naturals, namely, 10287156 + 10287157.

It is an arithmetic number, because the mean of its divisors is an integer number (10287157).

Almost surely, 2^20574313 is an apocalyptic number.

It is an amenable number.

20574313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20574313 is an equidigital number, since it uses as much as digits as its factorization.

20574313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20574313 is about 4535.8916433266. The cubic root of 20574313 is about 274.0154900934.

The spelling of 20574313 in words is "twenty million, five hundred seventy-four thousand, three hundred thirteen".