53442217 has 2 divisors, whose sum is σ = 53442218. Its totient is φ = 53442216.

The previous prime is 53442211. The next prime is 53442223. The reversal of 53442217 is 71224435.

It is a balanced prime because it is at equal distance from previous prime (53442211) and next prime (53442223).

It can be written as a sum of positive squares in only one way, i.e., 53421481 + 20736 = 7309^2 + 144^2 .

It is a cyclic number.

It is not a de Polignac number, because 53442217 - 2³ = 53442209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53442211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721108 + 26721109.

It is an arithmetic number, because the mean of its divisors is an integer number (26721109).

Almost surely, 2^53442217 is an apocalyptic number.

It is an amenable number.

53442217 is a deficient number, since it is larger than the sum of its proper divisors (1).

53442217 is an equidigital number, since it uses as much as digits as its factorization.

53442217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 28.

The square root of 53442217 is about 7310.4183874796. The cubic root of 53442217 is about 376.6703960613.

It can be divided in two parts, 53 and 442217, that added together give a triangular number (442270 = T₉₄₀).

The spelling of 53442217 in words is "fifty-three million, four hundred forty-two thousand, two hundred seventeen".