20574061 has 2 divisors, whose sum is σ = 20574062. Its totient is φ = 20574060.

The previous prime is 20574053. The next prime is 20574083. The reversal of 20574061 is 16047502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20529961 + 44100 = 4531^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 20574061 - 2³ = 20574053 is a prime.

It is equal to p_1304674 and since 20574061 and 1304674 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20574011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10287030 + 10287031.

It is an arithmetic number, because the mean of its divisors is an integer number (10287031).

Almost surely, 2^20574061 is an apocalyptic number.

20574061 is the 2029-th centered decagonal number.

It is an amenable number.

20574061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20574061 is an equidigital number, since it uses as much as digits as its factorization.

20574061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20574061 is about 4535.8638648002. The cubic root of 20574061 is about 274.0143713491.

The spelling of 20574061 in words is "twenty million, five hundred seventy-four thousand, sixty-one".