55822138 has 4 divisors (see below), whose sum is σ = 83733210. Its totient is φ = 27911068.

The previous prime is 55822097. The next prime is 55822139. The reversal of 55822138 is 83122855.

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., 55756089 + 66049 = 7467^2 + 257^2 .

It is a super-2 number, since 2×55822138² = 6232222181782088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55822139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13955533 + ... + 13955536.

Almost surely, 2^55822138 is an apocalyptic number.

55822138 is a deficient number, since it is larger than the sum of its proper divisors (27911072).

55822138 is a wasteful number, since it uses less digits than its factorization.

55822138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27911071.

The product of its digits is 19200, while the sum is 34.

The square root of 55822138 is about 7471.4214176420. The cubic root of 55822138 is about 382.1807620146.

The spelling of 55822138 in words is "fifty-five million, eight hundred twenty-two thousand, one hundred thirty-eight".