55649386 has 16 divisors (see below), whose sum is σ = 90909000. Its totient is φ = 25394688.

The previous prime is 55649357. The next prime is 55649387. The reversal of 55649386 is 68394655.

It can be written as a sum of positive squares in 4 ways, for example, as 29322225 + 26327161 = 5415^2 + 5131^2 .

It is not an unprimeable number, because it can be changed into a prime (55649387) 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 7 ways as a sum of consecutive naturals, for example, 9711 + ... + 14338.

Almost surely, 2^55649386 is an apocalyptic number.

55649386 is a deficient number, since it is larger than the sum of its proper divisors (35259614).

55649386 is a wasteful number, since it uses less digits than its factorization.

55649386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24153.

The product of its digits is 777600, while the sum is 46.

The square root of 55649386 is about 7459.8516071032. The cubic root of 55649386 is about 381.7861114512.

The spelling of 55649386 in words is "fifty-five million, six hundred forty-nine thousand, three hundred eighty-six".