55061786 has 16 divisors (see below), whose sum is σ = 89766600. Its totient is φ = 25178688.

The previous prime is 55061779. The next prime is 55061803. The reversal of 55061786 is 68716055.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24314761 + 30747025 = 4931^2 + 5545^2 .

It is an unprimeable number.

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, 6881 + ... + 12548.

Almost surely, 2^55061786 is an apocalyptic number.

55061786 is a deficient number, since it is larger than the sum of its proper divisors (34704814).

55061786 is a wasteful number, since it uses less digits than its factorization.

55061786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19553.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 55061786 is about 7420.3629291295. The cubic root of 55061786 is about 380.4375983724.

The spelling of 55061786 in words is "fifty-five million, sixty-one thousand, seven hundred eighty-six".