55215226 has 16 divisors (see below), whose sum is σ = 94281408. Its totient is φ = 24006400.

The previous prime is 55215179. The next prime is 55215239. The reversal of 55215226 is 62251255.

It is a junction number, because it is equal to n+sod(n) for n = 55215194 and 55215203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54055 + ... + 55066.

It is an arithmetic number, because the mean of its divisors is an integer number (5892588).

Almost surely, 2^55215226 is an apocalyptic number.

55215226 is a deficient number, since it is larger than the sum of its proper divisors (39066182).

55215226 is a wasteful number, since it uses less digits than its factorization.

55215226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109157.

The product of its digits is 6000, while the sum is 28.

The square root of 55215226 is about 7430.6948531076. The cubic root of 55215226 is about 380.7906575413.

The spelling of 55215226 in words is "fifty-five million, two hundred fifteen thousand, two hundred twenty-six".