55023210 has 48 divisors (see below), whose sum is σ = 156068640. Its totient is φ = 13338720.

The previous prime is 55023191. The next prime is 55023251. The reversal of 55023210 is 1232055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26800 + ... + 28779.

It is an arithmetic number, because the mean of its divisors is an integer number (3251430).

Almost surely, 2^55023210 is an apocalyptic number.

55023210 is an abundant number, since it is smaller than the sum of its proper divisors (101045430).

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

55023210 is a wasteful number, since it uses less digits than its factorization.

55023210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55603 (or 55600 counting only the distinct ones).

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

The square root of 55023210 is about 7417.7631399230. The cubic root of 55023210 is about 380.3487334176.

Adding to 55023210 its reverse (1232055), we get a palindrome (56255265).

The spelling of 55023210 in words is "fifty-five million, twenty-three thousand, two hundred ten".