55419642 has 24 divisors (see below), whose sum is σ = 120212820. Its totient is φ = 18452160.

The previous prime is 55419641. The next prime is 55419671. The reversal of 55419642 is 24691455.

55419642 is a `hidden beast` number, since 5 + 5 + 4 + 1 + 9 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47073321 + 8346321 = 6861^2 + 2889^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55419597 and 55419606.

It is not an unprimeable number, because it can be changed into a prime (55419641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30084 + ... + 31872.

Almost surely, 2^55419642 is an apocalyptic number.

55419642 is an abundant number, since it is smaller than the sum of its proper divisors (64793178).

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

55419642 is a wasteful number, since it uses less digits than its factorization.

55419642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518 (or 3515 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55419642 is about 7444.4369834125. The cubic root of 55419642 is about 381.2599957247.

The spelling of 55419642 in words is "fifty-five million, four hundred nineteen thousand, six hundred forty-two".