55222630 has 16 divisors (see below), whose sum is σ = 105248160. Its totient is φ = 20789632.

The previous prime is 55222627. The next prime is 55222633. The reversal of 55222630 is 3622255.

It is an interprime number because it is at equal distance from previous prime (55222627) and next prime (55222633).

It is a junction number, because it is equal to n+sod(n) for n = 55222595 and 55222604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55222633) 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, 162250 + ... + 162589.

It is an arithmetic number, because the mean of its divisors is an integer number (6578010).

Almost surely, 2^55222630 is an apocalyptic number.

55222630 is a deficient number, since it is larger than the sum of its proper divisors (50025530).

55222630 is a wasteful number, since it uses less digits than its factorization.

55222630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324863.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 55222630 is about 7431.1930401518. The cubic root of 55222630 is about 380.8076772912.

Adding to 55222630 its reverse (3622255), we get a palindrome (58844885).

The spelling of 55222630 in words is "fifty-five million, two hundred twenty-two thousand, six hundred thirty".