56415431 has 2 divisors, whose sum is σ = 56415432. Its totient is φ = 56415430.

The previous prime is 56415421. The next prime is 56415461. The reversal of 56415431 is 13451465.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56415431 is a prime.

It is a super-2 number, since 2×56415431² = 6365401709831522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56415394 and 56415403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56415421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28207715 + 28207716.

It is an arithmetic number, because the mean of its divisors is an integer number (28207716).

Almost surely, 2^56415431 is an apocalyptic number.

56415431 is a deficient number, since it is larger than the sum of its proper divisors (1).

56415431 is an equidigital number, since it uses as much as digits as its factorization.

56415431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 29.

The square root of 56415431 is about 7511.0206363716. The cubic root of 56415431 is about 383.5299673387.

Adding to 56415431 its reverse (13451465), we get a palindrome (69866896).

The spelling of 56415431 in words is "fifty-six million, four hundred fifteen thousand, four hundred thirty-one".