55217353 has 2 divisors, whose sum is σ = 55217354. Its totient is φ = 55217352.

The previous prime is 55217321. The next prime is 55217387. The reversal of 55217353 is 35371255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48622729 + 6594624 = 6973^2 + 2568^2 .

It is a cyclic number.

It is not a de Polignac number, because 55217353 - 2⁵ = 55217321 is a prime.

It is not a weakly prime, because it can be changed into another prime (55217303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27608676 + 27608677.

It is an arithmetic number, because the mean of its divisors is an integer number (27608677).

Almost surely, 2^55217353 is an apocalyptic number.

It is an amenable number.

55217353 is a deficient number, since it is larger than the sum of its proper divisors (1).

55217353 is an equidigital number, since it uses as much as digits as its factorization.

55217353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15750, while the sum is 31.

The square root of 55217353 is about 7430.8379742799. The cubic root of 55217353 is about 380.7955470822.

The spelling of 55217353 in words is "fifty-five million, two hundred seventeen thousand, three hundred fifty-three".