55620230 has 16 divisors (see below), whose sum is σ = 100214064. Its totient is φ = 22226400.

The previous prime is 55620203. The next prime is 55620263. The reversal of 55620230 is 3202655.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55620196 and 55620205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11705 + ... + 15755.

It is an arithmetic number, because the mean of its divisors is an integer number (6263379).

Almost surely, 2^55620230 is an apocalyptic number.

55620230 is a deficient number, since it is larger than the sum of its proper divisors (44593834).

55620230 is a wasteful number, since it uses less digits than its factorization.

55620230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 55620230 is about 7457.8971567058. The cubic root of 55620230 is about 381.7194242798.

Adding to 55620230 its reverse (3202655), we get a palindrome (58822885).

The spelling of 55620230 in words is "fifty-five million, six hundred twenty thousand, two hundred thirty".