55243210 has 32 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 20016960.

The previous prime is 55243169. The next prime is 55243211. The reversal of 55243210 is 1234255.

It is a super-2 number, since 2×55243210² = 6103624502208200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (55243211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37671 + ... + 39109.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^55243210 is an apocalyptic number.

55243210 is a deficient number, since it is larger than the sum of its proper divisors (53620790).

55243210 is a wasteful number, since it uses less digits than its factorization.

55243210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55243210 is about 7432.5776147982. The cubic root of 55243210 is about 380.8549770344.

Adding to 55243210 its reverse (1234255), we get a palindrome (56477465).

The spelling of 55243210 in words is "fifty-five million, two hundred forty-three thousand, two hundred ten".