55660342 has 4 divisors (see below), whose sum is σ = 83490516. Its totient is φ = 27830170.

The previous prime is 55660337. The next prime is 55660343. The reversal of 55660342 is 24306655.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55660343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13915084 + ... + 13915087.

It is an arithmetic number, because the mean of its divisors is an integer number (20872629).

Almost surely, 2^55660342 is an apocalyptic number.

55660342 is a deficient number, since it is larger than the sum of its proper divisors (27830174).

55660342 is a wasteful number, since it uses less digits than its factorization.

55660342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27830173.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 55660342 is about 7460.5859019249. The cubic root of 55660342 is about 381.8111645828.

Adding to 55660342 its reverse (24306655), we get a palindrome (79966997).

The spelling of 55660342 in words is "fifty-five million, six hundred sixty thousand, three hundred forty-two".