55521122 has 4 divisors (see below), whose sum is σ = 83281686. Its totient is φ = 27760560.

The previous prime is 55521083. The next prime is 55521131. The reversal of 55521122 is 22112555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55517401 + 3721 = 7451^2 + 61^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13880279 + ... + 13880282.

Almost surely, 2^55521122 is an apocalyptic number.

55521122 is a deficient number, since it is larger than the sum of its proper divisors (27760564).

55521122 is a wasteful number, since it uses less digits than its factorization.

55521122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27760563.

The product of its digits is 1000, while the sum is 23.

The square root of 55521122 is about 7451.2496938433. The cubic root of 55521122 is about 381.4925647289.

Adding to 55521122 its reverse (22112555), we get a palindrome (77633677).

The spelling of 55521122 in words is "fifty-five million, five hundred twenty-one thousand, one hundred twenty-two".