55577422 has 4 divisors (see below), whose sum is σ = 83366136. Its totient is φ = 27788710.

The previous prime is 55577399. The next prime is 55577429. The reversal of 55577422 is 22477555.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55577429) 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 as a sum of consecutive naturals, namely, 13894354 + ... + 13894357.

It is an arithmetic number, because the mean of its divisors is an integer number (20841534).

Almost surely, 2^55577422 is an apocalyptic number.

55577422 is a deficient number, since it is larger than the sum of its proper divisors (27788714).

55577422 is a wasteful number, since it uses less digits than its factorization.

55577422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27788713.

The product of its digits is 98000, while the sum is 37.

The square root of 55577422 is about 7455.0266263777. The cubic root of 55577422 is about 381.6214692786.

It can be divided in two parts, 555 and 77422, that added together give a palindrome (77977).

The spelling of 55577422 in words is "fifty-five million, five hundred seventy-seven thousand, four hundred twenty-two".