55970786 has 4 divisors (see below), whose sum is σ = 83956182. Its totient is φ = 27985392.

The previous prime is 55970773. The next prime is 55970797. The reversal of 55970786 is 68707955.

It is a happy number.

55970786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 4490161 = 7175^2 + 2119^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55970786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13992695 + ... + 13992698.

Almost surely, 2^55970786 is an apocalyptic number.

55970786 is a deficient number, since it is larger than the sum of its proper divisors (27985396).

55970786 is a wasteful number, since it uses less digits than its factorization.

55970786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27985395.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 55970786 is about 7481.3625764295. The cubic root of 55970786 is about 382.5196959684.

The spelling of 55970786 in words is "fifty-five million, nine hundred seventy thousand, seven hundred eighty-six".