56275217 has 4 divisors (see below), whose sum is σ = 56561076. Its totient is φ = 55989360.

The previous prime is 56275211. The next prime is 56275231. The reversal of 56275217 is 71257265.

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: 71257265 = 5 ⋅14251453.

It can be written as a sum of positive squares in 2 ways, for example, as 54037201 + 2238016 = 7351^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 56275217 - 2⁴ = 56275201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56275211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142634 + ... + 143027.

It is an arithmetic number, because the mean of its divisors is an integer number (14140269).

Almost surely, 2^56275217 is an apocalyptic number.

It is an amenable number.

56275217 is a deficient number, since it is larger than the sum of its proper divisors (285859).

56275217 is a wasteful number, since it uses less digits than its factorization.

56275217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285858.

The product of its digits is 29400, while the sum is 35.

The square root of 56275217 is about 7501.6809449616. The cubic root of 56275217 is about 383.2119640131.

The spelling of 56275217 in words is "fifty-six million, two hundred seventy-five thousand, two hundred seventeen".