55772986 has 8 divisors (see below), whose sum is σ = 85920660. Its totient is φ = 27132768.

The previous prime is 55772933. The next prime is 55772989. The reversal of 55772986 is 68927755.

55772986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 54834025 + 938961 = 7405^2 + 969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55772986² = 6221251934712392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55772989) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 376771 + ... + 376918.

Almost surely, 2^55772986 is an apocalyptic number.

55772986 is a deficient number, since it is larger than the sum of its proper divisors (30147674).

55772986 is a wasteful number, since it uses less digits than its factorization.

55772986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753728.

The product of its digits is 1058400, while the sum is 49.

The square root of 55772986 is about 7468.1313593161. The cubic root of 55772986 is about 382.0685576357.

The spelling of 55772986 in words is "fifty-five million, seven hundred seventy-two thousand, nine hundred eighty-six".