20413357 has 2 divisors, whose sum is σ = 20413358. Its totient is φ = 20413356.

The previous prime is 20413331. The next prime is 20413399. The reversal of 20413357 is 75331402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14791716 + 5621641 = 3846^2 + 2371^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413357 - 2¹⁵ = 20380589 is a prime.

It is equal to p_1295125 and since 20413357 and 1295125 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 (20413157) 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, 10206678 + 10206679.

It is an arithmetic number, because the mean of its divisors is an integer number (10206679).

Almost surely, 2^20413357 is an apocalyptic number.

It is an amenable number.

20413357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413357 is an equidigital number, since it uses as much as digits as its factorization.

20413357 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 20413357 is about 4518.1143190495. The cubic root of 20413357 is about 273.2990635534.

Adding to 20413357 its reverse (75331402), we get a palindrome (95744759).

The spelling of 20413357 in words is "twenty million, four hundred thirteen thousand, three hundred fifty-seven".