55649415 has 16 divisors (see below), whose sum is σ = 94277088. Its totient is φ = 27933696.

The previous prime is 55649413. The next prime is 55649441. The reversal of 55649415 is 51494655.

It is not a de Polignac number, because 55649415 - 2¹ = 55649413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55649413) 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 15 ways as a sum of consecutive naturals, for example, 108862 + ... + 109371.

It is an arithmetic number, because the mean of its divisors is an integer number (5892318).

Almost surely, 2^55649415 is an apocalyptic number.

55649415 is a deficient number, since it is larger than the sum of its proper divisors (38627673).

55649415 is a wasteful number, since it uses less digits than its factorization.

55649415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218258.

The product of its digits is 108000, while the sum is 39.

The square root of 55649415 is about 7459.8535508413. The cubic root of 55649415 is about 381.7861777700.

The spelling of 55649415 in words is "fifty-five million, six hundred forty-nine thousand, four hundred fifteen".