55665042 has 16 divisors (see below), whose sum is σ = 111408960. Its totient is φ = 18541872.

The previous prime is 55665013. The next prime is 55665047. The reversal of 55665042 is 24056655.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55664994 and 55665012.

It is not an unprimeable number, because it can be changed into a prime (55665047) 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 in 7 ways as a sum of consecutive naturals, for example, 10059 + ... + 14577.

It is an arithmetic number, because the mean of its divisors is an integer number (6963060).

Almost surely, 2^55665042 is an apocalyptic number.

55665042 is an abundant number, since it is smaller than the sum of its proper divisors (55743918).

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

55665042 is a wasteful number, since it uses less digits than its factorization.

55665042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 55665042 is about 7460.9008839416. The cubic root of 55665042 is about 381.8219110850.

The spelling of 55665042 in words is "fifty-five million, six hundred sixty-five thousand, forty-two".