55466815 has 16 divisors (see below), whose sum is σ = 68335488. Its totient is φ = 43200256.

The previous prime is 55466813. The next prime is 55466857. The reversal of 55466815 is 51866455.

It is a cyclic number.

It is not a de Polignac number, because 55466815 - 2¹ = 55466813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55466813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54249 + ... + 55261.

It is an arithmetic number, because the mean of its divisors is an integer number (4270968).

Almost surely, 2^55466815 is an apocalyptic number.

55466815 is a deficient number, since it is larger than the sum of its proper divisors (12868673).

55466815 is a wasteful number, since it uses less digits than its factorization.

55466815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its digits is 144000, while the sum is 40.

The square root of 55466815 is about 7447.6046484759. The cubic root of 55466815 is about 381.3681407587.

The spelling of 55466815 in words is "fifty-five million, four hundred sixty-six thousand, eight hundred fifteen".