55669142 has 4 divisors (see below), whose sum is σ = 83503716. Its totient is φ = 27834570.

The previous prime is 55669139. The next prime is 55669147. The reversal of 55669142 is 24196655.

55669142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 55669096 and 55669105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55669147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13917284 + ... + 13917287.

It is an arithmetic number, because the mean of its divisors is an integer number (20875929).

Almost surely, 2^55669142 is an apocalyptic number.

55669142 is a deficient number, since it is larger than the sum of its proper divisors (27834574).

55669142 is a wasteful number, since it uses less digits than its factorization.

55669142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27834573.

The product of its digits is 64800, while the sum is 38.

The square root of 55669142 is about 7461.1756446287. The cubic root of 55669142 is about 381.8312851993.

The spelling of 55669142 in words is "fifty-five million, six hundred sixty-nine thousand, one hundred forty-two".