55150222 has 16 divisors (see below), whose sum is σ = 84463344. Its totient is φ = 27000000.

The previous prime is 55150219. The next prime is 55150231. The reversal of 55150222 is 22205155.

It is a junction number, because it is equal to n+sod(n) for n = 55150193 and 55150202.

It is a congruent number.

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, 29722 + ... + 31522.

It is an arithmetic number, because the mean of its divisors is an integer number (5278959).

Almost surely, 2^55150222 is an apocalyptic number.

55150222 is a deficient number, since it is larger than the sum of its proper divisors (29313122).

55150222 is a wasteful number, since it uses less digits than its factorization.

55150222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 55150222 is about 7426.3195460470. The cubic root of 55150222 is about 380.6411659499.

Adding to 55150222 its reverse (22205155), we get a palindrome (77355377).

The spelling of 55150222 in words is "fifty-five million, one hundred fifty thousand, two hundred twenty-two".