61855228 has 12 divisors (see below), whose sum is σ = 109319112. Its totient is φ = 30621200.

The previous prime is 61855219. The next prime is 61855253. The reversal of 61855228 is 82255816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76150 + ... + 76957.

It is an arithmetic number, because the mean of its divisors is an integer number (9109926).

Almost surely, 2^61855228 is an apocalyptic number.

It is an amenable number.

61855228 is a deficient number, since it is larger than the sum of its proper divisors (47463884).

61855228 is a wasteful number, since it uses less digits than its factorization.

61855228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153212 (or 153210 counting only the distinct ones).

The product of its digits is 38400, while the sum is 37.

The square root of 61855228 is about 7864.8094700380. The cubic root of 61855228 is about 395.4808607270.

The spelling of 61855228 in words is "sixty-one million, eight hundred fifty-five thousand, two hundred twenty-eight".