55220353 has 2 divisors, whose sum is σ = 55220354. Its totient is φ = 55220352.

The previous prime is 55220293. The next prime is 55220357. The reversal of 55220353 is 35302255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 5489649 = 7052^2 + 2343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55220353 is a prime.

It is not a weakly prime, because it can be changed into another prime (55220357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27610176 + 27610177.

It is an arithmetic number, because the mean of its divisors is an integer number (27610177).

Almost surely, 2^55220353 is an apocalyptic number.

It is an amenable number.

55220353 is a deficient number, since it is larger than the sum of its proper divisors (1).

55220353 is an equidigital number, since it uses as much as digits as its factorization.

55220353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 55220353 is about 7431.0398330247. The cubic root of 55220353 is about 380.8024432594.

The spelling of 55220353 in words is "fifty-five million, two hundred twenty thousand, three hundred fifty-three".