55557422 has 4 divisors (see below), whose sum is σ = 83336136. Its totient is φ = 27778710.

The previous prime is 55557421. The next prime is 55557427. The reversal of 55557422 is 22475555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22475555 = 5 ⋅4495111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55557421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13889354 + ... + 13889357.

It is an arithmetic number, because the mean of its divisors is an integer number (20834034).

Almost surely, 2^55557422 is an apocalyptic number.

55557422 is a deficient number, since it is larger than the sum of its proper divisors (27778714).

55557422 is a wasteful number, since it uses less digits than its factorization.

55557422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778713.

The product of its digits is 70000, while the sum is 35.

The square root of 55557422 is about 7453.6851288473. The cubic root of 55557422 is about 381.5756872277.

The spelling of 55557422 in words is "fifty-five million, five hundred fifty-seven thousand, four hundred twenty-two".