20452057 has 2 divisors, whose sum is σ = 20452058. Its totient is φ = 20452056.

The previous prime is 20452051. The next prime is 20452063. The reversal of 20452057 is 75025402.

It is a balanced prime because it is at equal distance from previous prime (20452051) and next prime (20452063).

It can be written as a sum of positive squares in only one way, i.e., 13980121 + 6471936 = 3739^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 20452057 - 2³ = 20452049 is a prime.

It is equal to p_1297402 and since 20452057 and 1297402 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20452051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226028 + 10226029.

It is an arithmetic number, because the mean of its divisors is an integer number (10226029).

Almost surely, 2^20452057 is an apocalyptic number.

It is an amenable number.

20452057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20452057 is an equidigital number, since it uses as much as digits as its factorization.

20452057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 20452057 is about 4522.3950512975. The cubic root of 20452057 is about 273.4716629120.

Adding to 20452057 its reverse (75025402), we get a palindrome (95477459).

The spelling of 20452057 in words is "twenty million, four hundred fifty-two thousand, fifty-seven".