55870230 has 32 divisors (see below), whose sum is σ = 144404064. Its totient is φ = 13752576.

The previous prime is 55870189. The next prime is 55870231. The reversal of 55870230 is 3207855.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55870231) 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 15 ways as a sum of consecutive naturals, for example, 71239 + ... + 72018.

It is an arithmetic number, because the mean of its divisors is an integer number (4512627).

Almost surely, 2^55870230 is an apocalyptic number.

55870230 is an abundant number, since it is smaller than the sum of its proper divisors (88533834).

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

55870230 is a wasteful number, since it uses less digits than its factorization.

55870230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143280.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 55870230 is about 7474.6391217235. The cubic root of 55870230 is about 382.2904828898.

The spelling of 55870230 in words is "fifty-five million, eight hundred seventy thousand, two hundred thirty".