55222450 has 12 divisors (see below), whose sum is σ = 102713850. Its totient is φ = 22088960.

The previous prime is 55222423. The next prime is 55222459. The reversal of 55222450 is 5422255.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 48205249 + 7017201 = 6943^2 + 2649^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (55222459) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 552175 + ... + 552274.

Almost surely, 2^55222450 is an apocalyptic number.

55222450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55222450 is a deficient number, since it is larger than the sum of its proper divisors (47491400).

55222450 is a wasteful number, since it uses less digits than its factorization.

55222450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104461 (or 1104456 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 55222450 is about 7431.1809290314. The cubic root of 55222450 is about 380.8072635390.

The spelling of 55222450 in words is "fifty-five million, two hundred twenty-two thousand, four hundred fifty".