56448247 has 4 divisors (see below), whose sum is σ = 56860416. Its totient is φ = 56036080.

The previous prime is 56448229. The next prime is 56448299. The reversal of 56448247 is 74284465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74284465 = 5 ⋅14856893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56448247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56448947) 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 in 3 ways as a sum of consecutive naturals, for example, 205879 + ... + 206152.

It is an arithmetic number, because the mean of its divisors is an integer number (14215104).

Almost surely, 2^56448247 is an apocalyptic number.

56448247 is a deficient number, since it is larger than the sum of its proper divisors (412169).

56448247 is a wasteful number, since it uses less digits than its factorization.

56448247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412168.

The product of its digits is 215040, while the sum is 40.

The square root of 56448247 is about 7513.2048421429. The cubic root of 56448247 is about 383.6043174448.

The spelling of 56448247 in words is "fifty-six million, four hundred forty-eight thousand, two hundred forty-seven".