55861208 has 16 divisors (see below), whose sum is σ = 112796880. Its totient is φ = 25782048.

The previous prime is 55861207. The next prime is 55861213. The reversal of 55861208 is 80216855.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55861207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268460 + ... + 268667.

It is an arithmetic number, because the mean of its divisors is an integer number (7049805).

Almost surely, 2^55861208 is an apocalyptic number.

It is an amenable number.

55861208 is an abundant number, since it is smaller than the sum of its proper divisors (56935672).

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

55861208 is a wasteful number, since it uses less digits than its factorization.

55861208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537146 (or 537142 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 55861208 is about 7474.0355899608. The cubic root of 55861208 is about 382.2699041881.

The spelling of 55861208 in words is "fifty-five million, eight hundred sixty-one thousand, two hundred eight".