55819242 has 12 divisors (see below), whose sum is σ = 120941730. Its totient is φ = 18606408.

The previous prime is 55819237. The next prime is 55819259. The reversal of 55819242 is 24291855.

It can be written as a sum of positive squares in only one way, i.e., 53450721 + 2368521 = 7311^2 + 1539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55819197 and 55819206.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 1550517 + ... + 1550552.

Almost surely, 2^55819242 is an apocalyptic number.

55819242 is an abundant number, since it is smaller than the sum of its proper divisors (65122488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55819242 is a wasteful number, since it uses less digits than its factorization.

55819242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101077 (or 3101074 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 55819242 is about 7471.2276099715. The cubic root of 55819242 is about 382.1741528408.

The spelling of 55819242 in words is "fifty-five million, eight hundred nineteen thousand, two hundred forty-two".