56381434 has 4 divisors (see below), whose sum is σ = 84572154. Its totient is φ = 28190716.

The previous prime is 56381419. The next prime is 56381443. The reversal of 56381434 is 43418365.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48344209 + 8037225 = 6953^2 + 2835^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 56381434.

It is an unprimeable number.

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, 14095357 + ... + 14095360.

Almost surely, 2^56381434 is an apocalyptic number.

56381434 is a deficient number, since it is larger than the sum of its proper divisors (28190720).

56381434 is a wasteful number, since it uses less digits than its factorization.

56381434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28190719.

The product of its digits is 34560, while the sum is 34.

The square root of 56381434 is about 7508.7571541501. The cubic root of 56381434 is about 383.4529110670.

Adding to 56381434 its reverse (43418365), we get a palindrome (99799799).

The spelling of 56381434 in words is "fifty-six million, three hundred eighty-one thousand, four hundred thirty-four".