53225217 has 6 divisors (see below), whose sum is σ = 76880882. Its totient is φ = 35483472.

The previous prime is 53225201. The next prime is 53225219. The reversal of 53225217 is 71252235.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 12278016 = 6399^2 + 3504^2 .

It is not a de Polignac number, because 53225217 - 2⁴ = 53225201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53225219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2956948 + ... + 2956965.

Almost surely, 2^53225217 is an apocalyptic number.

It is an amenable number.

53225217 is a deficient number, since it is larger than the sum of its proper divisors (23655665).

53225217 is a wasteful number, since it uses less digits than its factorization.

53225217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913919 (or 5913916 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 53225217 is about 7295.5614588598. The cubic root of 53225217 is about 376.1598860727.

The spelling of 53225217 in words is "fifty-three million, two hundred twenty-five thousand, two hundred seventeen".