55120310 has 16 divisors (see below), whose sum is σ = 113390496. Its totient is φ = 18898368.

The previous prime is 55120309. The next prime is 55120313. The reversal of 55120310 is 1302155.

It is a super-2 number, since 2×55120310² = 6076497148992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55120313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393647 + ... + 393786.

It is an arithmetic number, because the mean of its divisors is an integer number (7086906).

Almost surely, 2^55120310 is an apocalyptic number.

55120310 is an abundant number, since it is smaller than the sum of its proper divisors (58270186).

55120310 is a wasteful number, since it uses less digits than its factorization.

55120310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787447.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55120310 is about 7424.3053547116. The cubic root of 55120310 is about 380.5723369879.

Adding to 55120310 its reverse (1302155), we get a palindrome (56422465).

The spelling of 55120310 in words is "fifty-five million, one hundred twenty thousand, three hundred ten".