55120202 has 4 divisors (see below), whose sum is σ = 82680306. Its totient is φ = 27560100.

The previous prime is 55120189. The next prime is 55120283. The reversal of 55120202 is 20202155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20202155 = 5 ⋅4040431.

It can be written as a sum of positive squares in only one way, i.e., 28504921 + 26615281 = 5339^2 + 5159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13780049 + ... + 13780052.

Almost surely, 2^55120202 is an apocalyptic number.

55120202 is a deficient number, since it is larger than the sum of its proper divisors (27560104).

55120202 is a wasteful number, since it uses less digits than its factorization.

55120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27560103.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 55120202 is about 7424.2980813003. The cubic root of 55120202 is about 380.5720884295.

Adding to 55120202 its reverse (20202155), we get a palindrome (75322357).

The spelling of 55120202 in words is "fifty-five million, one hundred twenty thousand, two hundred two".