55839970 has 16 divisors (see below), whose sum is σ = 100916928. Its totient is φ = 22246000.

The previous prime is 55839961. The next prime is 55839977. The reversal of 55839970 is 7993855.

It is a self number, because there is not a number n which added to its sum of digits gives 55839970.

It is not an unprimeable number, because it can be changed into a prime (55839977) 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, 8614 + ... + 13633.

It is an arithmetic number, because the mean of its divisors is an integer number (6307308).

Almost surely, 2^55839970 is an apocalyptic number.

55839970 is a deficient number, since it is larger than the sum of its proper divisors (45076958).

55839970 is a wasteful number, since it uses less digits than its factorization.

55839970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22505.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 55839970 is about 7472.6146695785. The cubic root of 55839970 is about 382.2214526918.

The spelling of 55839970 in words is "fifty-five million, eight hundred thirty-nine thousand, nine hundred seventy".