56138413 has 2 divisors, whose sum is σ = 56138414. Its totient is φ = 56138412.

The previous prime is 56138393. The next prime is 56138443. The reversal of 56138413 is 31483165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28869129 + 27269284 = 5373^2 + 5222^2 .

It is a cyclic number.

It is not a de Polignac number, because 56138413 - 2⁹ = 56137901 is a prime.

It is a super-3 number, since 3×56138413³ (a number of 24 digits) contains 333 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56138443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28069206 + 28069207.

It is an arithmetic number, because the mean of its divisors is an integer number (28069207).

Almost surely, 2^56138413 is an apocalyptic number.

It is an amenable number.

56138413 is a deficient number, since it is larger than the sum of its proper divisors (1).

56138413 is an equidigital number, since it uses as much as digits as its factorization.

56138413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 56138413 is about 7492.5571736224. The cubic root of 56138413 is about 382.9011850052.

The spelling of 56138413 in words is "fifty-six million, one hundred thirty-eight thousand, four hundred thirteen".