55120302 has 12 divisors (see below), whose sum is σ = 119427360. Its totient is φ = 18373428.

The previous prime is 55120291. The next prime is 55120309. The reversal of 55120302 is 20302155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 3062239 = 55120302 / (5 + 5 + 1 + 2 + 0 + 3 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55120309) 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, 1531102 + ... + 1531137.

It is an arithmetic number, because the mean of its divisors is an integer number (9952280).

Almost surely, 2^55120302 is an apocalyptic number.

55120302 is an abundant number, since it is smaller than the sum of its proper divisors (64307058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55120302 is a wasteful number, since it uses less digits than its factorization.

55120302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062247 (or 3062244 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55120302 is about 7424.3048159407. The cubic root of 55120302 is about 380.5723185761.

Adding to 55120302 its reverse (20302155), we get a palindrome (75422457).

The spelling of 55120302 in words is "fifty-five million, one hundred twenty thousand, three hundred two".